Bella Thorne

Katie Price

Patrick Schwarzenegger

Charlie Reed

Rob Riggle

Jack Price

Quinn Shephard

Morgan

Ken Tremblett

Mark Reed

Suleka Mathew

Dr. Paula Fleming

Jenn Griffin

Barb Reed

Nicholas Coombe

Garver

Tiera Skovbye

Zoe Carmichael

Norm Misura

Fred / Night Clerk

Austin Anozie

Owen

Alex Pangburn

Wes

Guy Christie

Swim Coach

Paul McGillion

Blake Jones

Donny Lucas

Engineer

Jerome Yoo

Geeky Friend #1

Kenneth Tynan

Geeky Friend #2

Ava Dewhurst

7-Year-Old Katie

Audrey Smallman

7-Year-Old Morgan

Jaeda Lily Miller

7-Year-Old Zoe Carmichael

Ray Boulay

Swim Scout

Nick Watson

Guitarist

Michelle Choi-Lee

Nurse

Jacqueline King

Jessica Rollins

Allyson Grant

Theresa Price

Darla Pitkanen

Zoe's Friend #1

Dean Petriw

Tommy / Young Boy

Kris Neufeld

Ice Cream Customer

Farris Tyab

Man

Kiarra Hamagami Goldberg

Patient

Chris Sheilds

Principal

Kiefer O'Reilly

Young Charlie (uncredited)

Jeff Reyes

Swim Team Member (uncredited)

Tom Vanderkam

Band - Lead Vocalist (uncredited)

Yobdee Marazzi

Zoe's Friend (uncredited)