A retrospective review in Vox was critical of this episode, stating, "If you've ever started to wonder exactly when Carrie Bradshaw turned from plucky, charming rom-com heroine to raging narcissist, the answer is in season four, episode 16, 'Ring a Ding Ding' of Sex and the City, at precisely 18 minutes and 57 seconds."
Samantha tells Carrie she is a fool for not keeping the engagement ring that Aidan gave her yet Samantha gives her canary diamond ring back to Richard at the end of S5 Ep 3 when she breaks up with him again. That same ring can be seen in later episodes on Samantha's left middle finger.