Chevy Chase

Clark Griswold

Beverly D'Angelo

Ellen Griswold

Randy Quaid

Cousin Eddie

Ethan Embry

Russell 'Rusty' Griswold

Marisol Nichols

Audrey Griswold

Miriam Flynn

Cousin Catherine

Shae D'Lyn

Cousin Vicki

Wayne Newton

Himself

Wallace Shawn

Marty

Siegfried Fischbacher

Siegfried

Roy Horn

Roy

Sid Caesar

Mr Ellis

Corinna Harney

Girl at Blackjack Table

Christie Brinkley

Woman in Ferrari

Juliette Brewer

Cousin Ruby Sue

Zachariah Moyes

Cousin Denny

Shannah Laumeister Stern

Mariah

C.C. Costigan

Kelli

Wendy Kaufman

Wendy

Jerry Weintraub

Jilly

Larry Hankin

Preacher

Hayley Mortison

Girl in Hot Tub

Billie Perkins

Casino Guest (uncredited)

Vanessa Bednar

Hot Pool Model (uncredited)

Alana Austin

Tourist (uncredited)

Jeffrey Donovan

Hotel Employee (uncredited)

Sharon Mendel

Paramedic

Frank Washko Jr.

Guess Which Hand Dealer

Joe Lacoco

Riviera Bartender

Ruth Gillis

Saleswoman

JoAnn Bush

Flight Attendant (uncredited)