Rob Corddry Lou Craig Robinson Nick Clark Duke Jacob Chevy Chase Hot Tub Repairman Gillian Jacobs Jill Collette Wolfe Kelly Adam Scott Adam Jr. Kumail Nanjiani Brad Kellee Stewart Courtney Josh Heald Terry Gretchen Koerner Susan Lisa Loeb Herself Jessica Williams Herself Bruce Buffer Himself Mariana Paola Vicente Shot Girl Christian Slater Choozy Doozy Host Jason Jones Gary Winkle Olivia Jordan Bridesmaid Christine Bently Christine Adam Herschman J-Bird Kisha Sierra Bridesmaid John Cusack Adam (uncredited)