Colin Farrell

David

Margot Robbie

Sarah

Jennifer Grant

David's Mother

Hamish Linklater

David's Father

Phoebe Waller-Bridge

Female Cashier

Kevin Kline

The Mechanic

Jodie Turner-Smith

GPS (voice)

Lily Rabe

Sarah's Mother

Billy Magnussen

The Man

Chloe East

Cheryl

Lucy Thomas

Amanda

Sarah Gadon

The Woman

Brandon Perea

Mike

Calahan Skogman

Sarah's Groomsman

Jacqueline Novak

Stacy Dunn

Michelle Mao

Smitty

Jason Kravits

Mr. Nelson

Shelby Simmons

Stage Manager

Simon Khan

Tate Chandler

Yuvi Hecht

Young David

Mike Meldman

Father of the Bride

Pablo Soriano

Vincent

Galen Hooks

Choreographer

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

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