A decade after their wild summer as junior counselors, the gang reunites for a weekend of bonding, hanky-panky and hair-raising adventures.
| Actor | Role |
|---|---|
 Elizabeth BanksLindsay | Lindsay |
 H. Jon BenjaminMitch / Can of Vegetables (voice) | Mitch / Can of Vegetables (voice) |
 Michael Ian BlackMcKinley / George H.W. Bush | McKinley / George H.W. Bush |
 Janeane GarofaloBeth | Beth |
 Nina HellmanNancy | Nancy |
 Ken MarinoVictor Pulak | Victor Pulak |
 A.D. MilesGary | Gary |
 Marguerite MoreauKatie | Katie |
 Zak OrthJ.J. | J.J. |
 Amy PoehlerSusie | Susie |
 Paul RuddAndy | Andy |
 Marisa RyanAbby | Abby |
 Michael ShowalterCoop / Ronald Reagan | Coop / Ronald Reagan |
 Lake BellDonna | Donna |
 Sarah BurnsClaire | Claire |
 Josh CharlesBlake | Blake |
 Mark FeuersteinMark | Mark |
 Samm LevineArty | Arty |
 Alyssa MilanoRenata Murphy | Renata Murphy |
 Adam ScottBen | Ben |
 Eric NenningerWarner | Warner |
 Rich SommerGraham | Graham |
 David WainYaron / Bill Clinton | Yaron / Bill Clinton |