Kim Cattrall occasionally came to the set wearing a wedding dress to throw off paparazzi photographers, so they would then mislead the public to believe that her character Samantha Jones would get married in this film.
It was erroneously reported that due to a product placement deal with the studio Carrie Bradshaw would own a Hewlett-Packard laptop instead of her ubiquitous Macintosh laptop. Bradshaw's laptop is the same PowerBook G4 seen in the previous film.
The trivia item below may give away important plot points.
The blue Manolo Blahnik pumps that Carrie leaves in the penthouse, and that John uses as the "diamond to seal the deal," can be seen over her left shoulder when she's in her closet packing for Abu Dhabi.