National Lampoon's Christmas Vacation Movie Facts, Easter Eggs and hidden details

Clark and Cousin Eddie drink from Walley World brand mugs. Walley World is the fictional amusement park from the original NL's Vacation (1983).

The senile 80-year-old Aunt Bethany says the Pledge of Allegiance instead of grace before Christmas dinner. She forgets the line "under God," which was only added to the Pledge in 1954.

The cup Clark and Cousin Eddie drink out of is a Walley World glass, which appeared in the original National Lampoon's Vacation.

You can see that Eddie is wearing a mock turtleneck that shows through his sweater.

While Aunt Bethany is "saying grace" she skips the Under God line of the pledge while everyone else says it (explanation in comments)

After Clark cuts down his replacement tree, he is seen washing his hands to rid them of sap. He failed to do so after putting up his first tree and he has learned from that mistake.

" after Clark offers to buy gifts for Cousin Eddie's kids ("A real nice surprise"), Eddie takes a wish list out of his jacket. Eddie says the list is "Alphabetized, starting with Catherine." Catherine is Eddie's wife.

/u/ sandscript pointed out In National Lampoon's Christmas Vacation(1989) Aunt Bethany recites the original version of the Pledge of Allegiance ,without God, when asked to "Say Grace". Uncle Lewis audibly adds in God when he joins in saying the Pledge.

Clark gifts his boss a similarly wrapped gift as presumably his coworkers.

Ellen grabs Clark's genitals in the ending scene.