Chevy Chase
Clark Griswold
Beverly D'Angelo
Ellen Griswold
Ethan Embry
Russell 'Rusty' Griswold
Marisol Nichols
Audrey Griswold
Miriam Flynn
Cousin Catherine
Siegfried Fischbacher
Siegfried
Corinna Harney
Girl at Blackjack Table
Christie Brinkley
Woman in Ferrari
Juliette Brewer
Cousin Ruby Sue
Zachariah Moyes
Cousin Denny
Shannah Laumeister Stern
Mariah
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)