* BillingDisplacement: The posters for the film ran with the bridesmaids theme, depicting all five of them (plus the bride) which was why Chris O'Dowd (Officer Rhodes) doesn't appear, despite playing a more important character than Wendi [=McLendon=]-Covey (Rita) or Ellie Kemper (Becca).
* FakeAmerican / FakeBrit: Australians Rose Byrne and Rebel Wilson play an American and a Brit respectively. Averted with Irishman Chris O'Dowd.
* NamesTheSame: The name of Lillian's husband-to-be is Doug(ie), like the groom in the first ''[[TheHangover Hangover]]'' movie.
* RealitySubtext: This was Jill Clayburgh's (Annie's mom) last film, as she was secretly fighting leukemia.
* RealLifeRelative: Ben Falcone, who plays Air Marshall Jon, is married to Melissa [=McCarthy=] (Megan.)
* StarMakingRole: While Melissa [=McCarthy=] isn't that unknown, she was primarily a television actress before this movie. Her film career and star status skyrocketed after this and hasn't stopped since.