In every episode of the series, there has been a question involved with Carrie's writing. The moment Carrie changes the question mark to a period in this episode, she doesn't write anything until the very end of the series in a montage.
Michael Patrick King wanted to show the newborn puppies, but none were available and it seemed like they would have to use older puppies. The night before shooting, the pet wranglers found three newborn puppies at the pet sanctuary and they became a part of the shoot until the last episode.
All of the footage of New York during and after the snow storm was shot by the regular Sex and the City (1998) crew, and not by a stock footage house. It is the only time in the series where the city is shown without the girls in the shot.
Enid's (Candice Bergen) date set up is portrayed by Wallace Shawn who would later portray Candice Bergen's blind date in Book Club (2018). Shawn also played the lead in My Dinner with Andre (1981) directed by Louis Malle, who was married to Bergen prior to his death.