Trivia

After failing to get the Christmas lights to work one last time, Clark Griswold takes his frustration out on the plastic decorations in the front yard. Chevy Chase actually broke his pinky finger while punching Santa Claus. He resorts to kicking and clubbing the decorations after that. The film kept rolling, and the take was used.

Beverly D'Angelo improvised grabbing Chevy Chase's crotch when the SWAT team holds up the house. She later said she did it on only one take, on the off chance it could make the film's final cut, which is what happened.

The shoes that Cousin Eddie wears are the same ones that he gave Clark as a gift in the original Vacation.

Final film of Mae Questel, whose film career began in 1930, as the voice of Betty Boop.

It was rumored that Clark's rant about his boss Mr. Shirley was ad libbed. While this is somewhat true, cast members not onscreen who were facing Chevy had a sign hanging around their necks that had one word written on them. Some of these were adjectives Clark uses to describe his boss.