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This is the second time in the series Mary and Lester miss going to Hawaii. In season 3's "Snowbound" their flight was canceled due to a blizzard.

Math error: When Travis breaks down how long 30 days is, he misspeaks the seconds as 2,000,592 seconds. It should have been 2,592,000 seconds. Stoney Jackson may have missed the word "thousand" in the take.

Timeline Error: during their fight, Lester tells Mary he'll be heading to his mother's house. In the episode "The Class of '90" later in the season, it's revealed that his mother has been dead for 2 years.

Possible Goof: During Rose's flashback she is seen in apartment K, which is across the hall from apartment J (Sandra's apartment). Rose's apartment is supposed to be below Mary & Lester's, but Sandra's apartment is on a higher floor. Either this is a continuity error or Rose switched apartments later on.

During the monopoly game Pearl rolls a 5, but her piece only moves 3 spots.