Dave
Alvin (voice)
Simon (voice)
Theodore (voice)
Samantha
Miles
Agent Suggs
Ashley Grey
Barry
Brittany (voice)
Eleanor (voice)
Jeanette (voice)
Party Cop #1
Party Cop #2
Wyatt the Pizza Guy
Kid
Paparazzi #1
Paparazzi #2
Ms. Price
TSA Officer
First Class Flight Attendant
Cab Coordinator
Party Planner
Owner
Clapping Person
Cab Driver
Giant Bearded Guy
Large Cowboy
Bus Driver
Ticket Agent
Man Behind Mask
Airline Ticket Agent
Young Employee
Hotel Babysitter
Maitre'd
Alice
American Idol Bad Auditioner
Passing Record Executive
DJ
Fan #1
Fan #2
First Record Executive
Second Record Executive
Judge
Anna
DJ at Party
Access Hollywood Reporter
Access Hollywood Anchor
Parade Woman
First Class Passenger
Party Guy
Miniature Golf Boy
Pool Attendant
Waitress Passing Lady
Female Bartender
Brass Band Member
"Alvin" Reader
"Simon" Reader
"Theodore" Reader
Shelbourne Hotel Guest (voice) (uncredited)
Alvin (singing voice) (uncredited)
Photographer (uncredited)
Theodore / The Chipettes (singing voice) (uncredited)