Beanie Feldstein
Molly Davidson
Kaitlyn Dever
Amy Antsler
Skyler Gisondo
Jared
Diana Silvers
Hope
Eduardo Franco
Theo
Noah Galvin
George
Mason Gooding
Nick
Nico Hiraga
Tanner
Molly Gordon
Annabelle "Triple A"
Billie Lourd
Gigi
Victoria Ruesga
Ryan
Jessica Williams
Miss Fine
Austin Crute
Alan
Jason Sudeikis
Principal Jordan Brown
Lisa Kudrow
Charmaine Antsler
Will Forte
Doug Antsler
Michael Patrick O'Brien
Pat the Pizza Guy
Ben Harris
Yacht Waiter
Kyle Samples
Butler
Deb Hiett
George's Mom
Bluesy Burke
Cindy
Stephanie Styles
Alison
John Hartman
Yacht Waiter #2
Adam Krist
Dick
Gideon Lang
Skip
Ellen Doyle
Murder Mystery Nurse
Maya Rudolph
Motivational Voice (voice)