Colin Farrell
David
Margot Robbie
Sarah
Kevin Kline
The Mechanic
Phoebe Waller-Bridge
Female Cashier
Lily Rabe
Sarah's Mother
Hamish Linklater
David's Father
Jodie Turner-Smith
GPS (voice)
Chloe East
Cheryl
Jennifer Grant
David's Mother
Billy Magnussen
The Man
Sarah Gadon
The Woman
Jason Kravits
Mr. Nelson
Brandon Perea
Mike
Jacqueline Novak
Stacy Dunn
Lucy Thomas
Amanda
Mike Meldman
Father of the Bride
Calahan Skogman
Sarah's Groomsman
Pablo Soriano
Vincent
Galen Hooks
Choreographer
Michelle Mao
Smitty
Shelby Simmons
Stage Manager
Simon Khan
Tate Chandler
Brooke Maroon
Amy Moore
Julian Zane
Eddie Bora
Liz Jenkins
Another Mother
Gabriella Surodjawan
Miss Jones
Joyce Guy
Doctor Vernon
Karah Donovan
Nurse
Mia-Carina Mollicone
Hotel Receptionist
Yuvi Hecht
Young David
Aaron Quini
Student Performer
Carissa Rae Martin
Student Performer
Jarvis Langster
Student Performer
John Arthur Mays
Student Performer
Kayla LaVine
Student Performer
Mariah Spears
Student Performer
Phi VoBa
Student Performer