Revealing mistake: In the early part of the film, Beverly D'Angelo and Chevy Chase check into the hotel/motel. She goes in to take a shower but he barges in. If you look real closely, she is wearing underpants and is not nude although she is taking a shower.
National Lampoon's Vacation (1983)
Trailers
Directed by: Harold Ramis
Starring: Eugene Levy, Chevy Chase, John Candy, Randy Quaid, Anthony Michael Hall, Beverly D'Angelo, Jane Krakowski, Eddie Bracken, Christie Brinkley, Imogene Coca
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More mistakes in National Lampoon's Vacation
Cousin Vicki: I'm going steady, and I French kiss.
Audrey Griswold: So? Everybody does that.
Cousin Vicki: Yeah, but Daddy says I'm the best at it.
Trivia: Harold Ramis' voice can be heard as a member of the SWAT team telling Roy Wally, "Everything is wrapped up here" just before Roy decides not to press charges.
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Answer: Harold Ramis voiced Marty Moose.