diff --git a/source/crud/tests/unified/client-bulkWrite-delete-options.json b/source/crud/tests/unified/client-bulkWrite-delete-options.json
index d9987897dc..26cb3435dd 100644
--- a/source/crud/tests/unified/client-bulkWrite-delete-options.json
+++ b/source/crud/tests/unified/client-bulkWrite-delete-options.json
@@ -263,6 +263,123 @@
           "documents": []
         }
       ]
+    },
+    {
+      "description": "client bulkWrite delete with non-Int32 hint",
+      "operations": [
+        {
+          "object": "client0",
+          "name": "clientBulkWrite",
+          "arguments": {
+            "models": [
+              {
+                "deleteOne": {
+                  "namespace": "crud-tests.coll0",
+                  "filter": {
+                    "_id": 1
+                  },
+                  "hint": {
+                    "_id": {
+                      "$numberLong": "1"
+                    }
+                  }
+                }
+              },
+              {
+                "deleteMany": {
+                  "namespace": "crud-tests.coll0",
+                  "filter": {
+                    "_id": {
+                      "$gt": 1
+                    }
+                  },
+                  "hint": {
+                    "_id": {
+                      "$numberLong": "1"
+                    }
+                  }
+                }
+              }
+            ],
+            "verboseResults": true
+          },
+          "expectResult": {
+            "insertedCount": 0,
+            "upsertedCount": 0,
+            "matchedCount": 0,
+            "modifiedCount": 0,
+            "deletedCount": 3,
+            "insertResults": {},
+            "updateResults": {},
+            "deleteResults": {
+              "0": {
+                "deletedCount": 1
+              },
+              "1": {
+                "deletedCount": 2
+              }
+            }
+          }
+        }
+      ],
+      "expectEvents": [
+        {
+          "client": "client0",
+          "events": [
+            {
+              "commandStartedEvent": {
+                "commandName": "bulkWrite",
+                "databaseName": "admin",
+                "command": {
+                  "bulkWrite": 1,
+                  "errorsOnly": false,
+                  "ordered": true,
+                  "ops": [
+                    {
+                      "delete": 0,
+                      "filter": {
+                        "_id": 1
+                      },
+                      "hint": {
+                        "_id": {
+                          "$numberLong": "1"
+                        }
+                      },
+                      "multi": false
+                    },
+                    {
+                      "delete": 0,
+                      "filter": {
+                        "_id": {
+                          "$gt": 1
+                        }
+                      },
+                      "hint": {
+                        "_id": {
+                          "$numberLong": "1"
+                        }
+                      },
+                      "multi": true
+                    }
+                  ],
+                  "nsInfo": [
+                    {
+                      "ns": "crud-tests.coll0"
+                    }
+                  ]
+                }
+              }
+            }
+          ]
+        }
+      ],
+      "outcome": [
+        {
+          "databaseName": "crud-tests",
+          "collectionName": "coll0",
+          "documents": []
+        }
+      ]
     }
   ]
 }
diff --git a/source/crud/tests/unified/client-bulkWrite-delete-options.yml b/source/crud/tests/unified/client-bulkWrite-delete-options.yml
index 9297838535..77c29fc65b 100644
--- a/source/crud/tests/unified/client-bulkWrite-delete-options.yml
+++ b/source/crud/tests/unified/client-bulkWrite-delete-options.yml
@@ -135,3 +135,56 @@ tests:
       - databaseName: *database0Name
         collectionName: *collection0Name
         documents: []
+  - description: "client bulkWrite delete with non-Int32 hint"
+    operations:
+      - object: *client0
+        name: clientBulkWrite
+        arguments:
+          models:
+            - deleteOne:
+                namespace: *namespace
+                filter: { _id: 1 }
+                hint: { _id: { $numberLong: "1" } }
+            - deleteMany:
+                namespace: *namespace
+                filter: { _id: { $gt: 1 } }
+                hint: { _id: { $numberLong: "1" } }
+          verboseResults: true
+        expectResult:
+          insertedCount: 0
+          upsertedCount: 0
+          matchedCount: 0
+          modifiedCount: 0
+          deletedCount: 3
+          insertResults: {}
+          updateResults: {}
+          deleteResults:
+            0:
+              deletedCount: 1
+            1:
+              deletedCount: 2
+    expectEvents:
+      - client: *client0
+        events:
+          - commandStartedEvent:
+              commandName: bulkWrite
+              databaseName: admin
+              command:
+                bulkWrite: 1
+                errorsOnly: false
+                ordered: true
+                ops:
+                  - delete: 0
+                    filter: { _id: 1 }
+                    hint: { _id: { $numberLong: "1" } }
+                    multi: false
+                  - delete: 0
+                    filter: { _id: { $gt: 1 } }
+                    hint: { _id: { $numberLong: "1" } }
+                    multi: true
+                nsInfo:
+                  - ns: *namespace
+    outcome:
+      - databaseName: *database0Name
+        collectionName: *collection0Name
+        documents: []
diff --git a/source/crud/tests/unified/client-bulkWrite-options.json b/source/crud/tests/unified/client-bulkWrite-options.json
index 708fe4e85b..1b17faf446 100644
--- a/source/crud/tests/unified/client-bulkWrite-options.json
+++ b/source/crud/tests/unified/client-bulkWrite-options.json
@@ -711,6 +711,149 @@
           ]
         }
       ]
+    },
+    {
+      "description": "client bulkWrite with unacknowledged write concern (w:0) and ordered:true - expected to return an error",
+      "runOnRequirements": [
+        {
+          "minServerVersion": "8.0",
+          "serverless": "forbid"
+        }
+      ],
+      "operations": [
+        {
+          "object": "client0",
+          "name": "clientBulkWrite",
+          "arguments": {
+            "models": [
+              {
+                "insertOne": {
+                  "namespace": "crud-tests.coll0",
+                  "document": {
+                    "_id": 5,
+                    "x": 55
+                  }
+                }
+              },
+              {
+                "insertOne": {
+                  "namespace": "crud-tests.coll0",
+                  "document": {
+                    "_id": 6,
+                    "x": 66
+                  }
+                }
+              }
+            ],
+            "verboseResults": false,
+            "ordered": true,
+            "writeConcern": {
+              "w": 0
+            }
+          },
+          "expectError": {
+            "isClientError": true,
+            "errorContains": "Cannot request unacknowledged write concern and ordered writes"
+          }
+        }
+      ],
+      "expectEvents": [
+        {
+          "client": "client0",
+          "events": []
+        }
+      ]
+    },
+    {
+      "description": "client bulkWrite with unacknowledged write concern (w:0) for all batches with ordered=false",
+      "runOnRequirements": [
+        {
+          "minServerVersion": "8.0",
+          "serverless": "forbid"
+        }
+      ],
+      "operations": [
+        {
+          "object": "client0",
+          "name": "clientBulkWrite",
+          "arguments": {
+            "models": [
+              {
+                "insertOne": {
+                  "namespace": "crud-tests.coll0",
+                  "document": {
+                    "_id": 5,
+                    "x": 55
+                  }
+                }
+              },
+              {
+                "insertOne": {
+                  "namespace": "crud-tests.coll0",
+                  "document": {
+                    "_id": 6,
+                    "x": 66
+                  }
+                }
+              }
+            ],
+            "verboseResults": false,
+            "ordered": false,
+            "writeConcern": {
+              "w": 0
+            }
+          },
+          "expectResult": {
+            "$$unsetOrMatches": {
+              "acknowledged": {
+                "$$unsetOrMatches": false
+              }
+            }
+          }
+        }
+      ],
+      "expectEvents": [
+        {
+          "client": "client0",
+          "events": [
+            {
+              "commandStartedEvent": {
+                "commandName": "bulkWrite",
+                "databaseName": "admin",
+                "command": {
+                  "bulkWrite": 1,
+                  "errorsOnly": false,
+                  "ordered": false,
+                  "ops": [
+                    {
+                      "insert": 0,
+                      "document": {
+                        "_id": 5,
+                        "x": 55
+                      }
+                    },
+                    {
+                      "insert": 0,
+                      "document": {
+                        "_id": 6,
+                        "x": 66
+                      }
+                    }
+                  ],
+                  "nsInfo": [
+                    {
+                      "ns": "crud-tests.coll0"
+                    }
+                  ],
+                  "writeConcern": {
+                    "w": 0
+                  }
+                }
+              }
+            }
+          ]
+        }
+      ]
     }
   ]
 }
diff --git a/source/crud/tests/unified/client-bulkWrite-options.yml b/source/crud/tests/unified/client-bulkWrite-options.yml
index e0cbe747b3..080f61a776 100644
--- a/source/crud/tests/unified/client-bulkWrite-options.yml
+++ b/source/crud/tests/unified/client-bulkWrite-options.yml
@@ -349,3 +349,64 @@ tests:
                     document: { _id: 3, x: 33 }
                 nsInfo:
                   - ns: *namespace
+  - description: "client bulkWrite with unacknowledged write concern (w:0) and ordered:true should return an error"
+    runOnRequirements:
+      - minServerVersion: "8.0"
+        serverless: forbid
+    operations:
+      - object: *client0
+        name: clientBulkWrite
+        arguments:
+          models:
+            - insertOne:
+                namespace: *namespace
+                document: { _id: 5, x: 55 }
+            - insertOne:
+                namespace: *namespace
+                document: { _id: 6, x: 66 }
+          verboseResults: false
+          ordered: true
+          writeConcern: { w: 0 }
+        expectError:
+          isClientError: true
+          errorContains: "Cannot request unacknowledged write concern and ordered writes"
+    expectEvents:
+      - client: *client0
+        events: []
+  - description: "client bulkWrite with unacknowledged write concern (w:0) for all batches with ordered=false"
+    runOnRequirements:
+      - minServerVersion: "8.0"
+        serverless: forbid
+    operations:
+      - object: *client0
+        name: clientBulkWrite
+        arguments:
+          models:
+            - insertOne:
+                namespace: *namespace
+                document: { _id: 5, x: 55 }
+            - insertOne:
+                namespace: *namespace
+                document: { _id: 6, x: 66 }
+          verboseResults: false
+          ordered: false
+          writeConcern: { w: 0 }
+        expectResult: { $$unsetOrMatches: { acknowledged: { $$unsetOrMatches: false } } }
+    expectEvents:
+      - client: *client0
+        events:
+          - commandStartedEvent:
+              commandName: bulkWrite
+              databaseName: admin
+              command:
+                bulkWrite: 1
+                errorsOnly: false
+                ordered: false
+                ops:
+                  - insert: 0
+                    document: { _id: 5, x: 55 }
+                  - insert: 0
+                    document: { _id: 6, x: 66 }
+                nsInfo:
+                  - ns: *namespace
+                writeConcern: { w: 0 }
diff --git a/source/crud/tests/unified/client-bulkWrite-update-options.json b/source/crud/tests/unified/client-bulkWrite-update-options.json
index ce6241c681..52710d1d6e 100644
--- a/source/crud/tests/unified/client-bulkWrite-update-options.json
+++ b/source/crud/tests/unified/client-bulkWrite-update-options.json
@@ -944,6 +944,218 @@
           ]
         }
       ]
+    },
+    {
+      "description": "client bulkWrite update with non-Int32 hint",
+      "operations": [
+        {
+          "object": "client0",
+          "name": "clientBulkWrite",
+          "arguments": {
+            "models": [
+              {
+                "updateOne": {
+                  "namespace": "crud-tests.coll0",
+                  "filter": {
+                    "_id": 1
+                  },
+                  "update": {
+                    "$set": {
+                      "array": [
+                        1,
+                        2,
+                        4
+                      ]
+                    }
+                  },
+                  "hint": {
+                    "_id": {
+                      "$numberLong": "1"
+                    }
+                  }
+                }
+              },
+              {
+                "updateMany": {
+                  "namespace": "crud-tests.coll0",
+                  "filter": {
+                    "$and": [
+                      {
+                        "_id": {
+                          "$gt": 1
+                        }
+                      },
+                      {
+                        "_id": {
+                          "$lte": 3
+                        }
+                      }
+                    ]
+                  },
+                  "update": {
+                    "$set": {
+                      "array": [
+                        1,
+                        2,
+                        5
+                      ]
+                    }
+                  },
+                  "hint": {
+                    "_id": {
+                      "$numberLong": "1"
+                    }
+                  }
+                }
+              }
+            ],
+            "verboseResults": true
+          },
+          "expectResult": {
+            "insertedCount": 0,
+            "upsertedCount": 0,
+            "matchedCount": 3,
+            "modifiedCount": 3,
+            "deletedCount": 0,
+            "insertResults": {},
+            "updateResults": {
+              "0": {
+                "matchedCount": 1,
+                "modifiedCount": 1,
+                "upsertedId": {
+                  "$$exists": false
+                }
+              },
+              "1": {
+                "matchedCount": 2,
+                "modifiedCount": 2,
+                "upsertedId": {
+                  "$$exists": false
+                }
+              }
+            },
+            "deleteResults": {}
+          }
+        }
+      ],
+      "expectEvents": [
+        {
+          "client": "client0",
+          "events": [
+            {
+              "commandStartedEvent": {
+                "commandName": "bulkWrite",
+                "databaseName": "admin",
+                "command": {
+                  "bulkWrite": 1,
+                  "errorsOnly": false,
+                  "ordered": true,
+                  "ops": [
+                    {
+                      "update": 0,
+                      "filter": {
+                        "_id": 1
+                      },
+                      "updateMods": {
+                        "$set": {
+                          "array": [
+                            1,
+                            2,
+                            4
+                          ]
+                        }
+                      },
+                      "hint": {
+                        "_id": {
+                          "$numberLong": "1"
+                        }
+                      },
+                      "multi": false
+                    },
+                    {
+                      "update": 0,
+                      "filter": {
+                        "$and": [
+                          {
+                            "_id": {
+                              "$gt": 1
+                            }
+                          },
+                          {
+                            "_id": {
+                              "$lte": 3
+                            }
+                          }
+                        ]
+                      },
+                      "updateMods": {
+                        "$set": {
+                          "array": [
+                            1,
+                            2,
+                            5
+                          ]
+                        }
+                      },
+                      "hint": {
+                        "_id": {
+                          "$numberLong": "1"
+                        }
+                      },
+                      "multi": true
+                    }
+                  ],
+                  "nsInfo": [
+                    {
+                      "ns": "crud-tests.coll0"
+                    }
+                  ]
+                }
+              }
+            }
+          ]
+        }
+      ],
+      "outcome": [
+        {
+          "databaseName": "crud-tests",
+          "collectionName": "coll0",
+          "documents": [
+            {
+              "_id": 1,
+              "array": [
+                1,
+                2,
+                4
+              ]
+            },
+            {
+              "_id": 2,
+              "array": [
+                1,
+                2,
+                5
+              ]
+            },
+            {
+              "_id": 3,
+              "array": [
+                1,
+                2,
+                5
+              ]
+            },
+            {
+              "_id": 4,
+              "array": [
+                1,
+                2,
+                3
+              ]
+            }
+          ]
+        }
+      ]
     }
   ]
 }
diff --git a/source/crud/tests/unified/client-bulkWrite-update-options.yml b/source/crud/tests/unified/client-bulkWrite-update-options.yml
index c5cc20d480..bb006320d8 100644
--- a/source/crud/tests/unified/client-bulkWrite-update-options.yml
+++ b/source/crud/tests/unified/client-bulkWrite-update-options.yml
@@ -336,3 +336,70 @@ tests:
           - { _id: 4, array: [ 1, 2, 3 ] }
           - { _id: 5, array: [ 1, 2, 4 ] }
           - { _id: 6, array: [ 1, 2, 6 ] }
+  - description: "client bulkWrite update with non-Int32 hint"
+    operations:
+      - object: *client0
+        name: clientBulkWrite
+        arguments:
+          models:
+            - updateOne:
+                namespace: *namespace
+                filter: { _id: 1 }
+                update: { $set: { array: [ 1, 2, 4 ] } }
+                hint: { _id: { $numberLong: "1" } }
+            - updateMany:
+                namespace: *namespace
+                filter:
+                  $and: [ { _id: { $gt: 1 } }, { _id: { $lte: 3 } } ]
+                update: { $set: { array: [ 1, 2, 5 ] } }
+                hint: { _id: { $numberLong: "1" } }
+          verboseResults: true
+        expectResult:
+          insertedCount: 0
+          upsertedCount: 0
+          matchedCount: 3
+          modifiedCount: 3
+          deletedCount: 0
+          insertResults: {}
+          updateResults:
+            0:
+              matchedCount: 1
+              modifiedCount: 1
+              upsertedId: { $$exists: false }
+            1:
+              matchedCount: 2
+              modifiedCount: 2
+              upsertedId: { $$exists: false }
+          deleteResults: {}
+    expectEvents:
+      - client: *client0
+        events:
+          - commandStartedEvent:
+              commandName: bulkWrite
+              databaseName: admin
+              command:
+                bulkWrite: 1
+                errorsOnly: false
+                ordered: true
+                ops:
+                  - update: 0
+                    filter: { _id: 1 }
+                    updateMods: { $set: { array: [ 1, 2, 4 ] } }
+                    hint: { _id: { $numberLong: "1" } }
+                    multi: false
+                  - update: 0
+                    filter:
+                      $and: [ { _id: { $gt: 1 } }, { _id: { $lte: 3 } } ]
+                    updateMods: { $set: { array: [ 1, 2, 5 ] } }
+                    hint: { _id: { $numberLong: "1" } }
+                    multi: true
+                nsInfo:
+                  - ns: *namespace
+    outcome:
+      - databaseName: *database0Name
+        collectionName: *collection0Name
+        documents:
+          - { _id: 1, array: [ 1, 2, 4 ] }
+          - { _id: 2, array: [ 1, 2, 5 ] }
+          - { _id: 3, array: [ 1, 2, 5 ] }
+          - { _id: 4, array: [ 1, 2, 3 ] }