Kim Cattrall occasionally came to the set wearing a wedding dress for the benefit of the paparazzi photographers, to trick the public into thinking 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.