There are so many things wrong with that movie.
The highest point in the state of Illinois is 1235 feet - and yet they're deep in the mountains finding a tree. And if you say, "Well, it didn't have to be Illinois," it had to be close enough to get back in the same day, which gives you Wisconsin, Indiana, Iowa, or Michigan, none of which has an elevation that even reaches 2,000 feet - much less deep in a valley between mountains.
Then he has sap all over his fingers....but his pajamas are on.
The grandparents (apparently) come (BOTH SETS) for two weeks, which is insane.
Then there's the grotesque fact that in the FIRST MOVIE, it's pretty clear Cousin Eddie is a pedophile (remember when his daughter Vicki says, "Daddy says I'm the best at" French kissing?), but he's gone from playing a Vietnam veteran maniac in the first one to an adorable slob in this one. He still seems interested in teen girls who are relatives when he gets all huffy and says, "Let's go find your sister!" WTH????
Also, where in Illinois IN THE CITY or NEAR CHICAGO would you ever have a hill as long as the one Clark slides down on the saucer? That hill is longer than the one I rode a toboggan down in the Swiss Alps over 40 years ago.
Eddie's also kinda sleazy when he says "here's a Christmas list" that includes his wife on it - and depending on how you spell Katherine, it isn't alphabetical, either.
On top of all this NOBODY - and I mean NOBODY - would open their Christmas bonus check in front of the entire family, either. People don't want you to know how much they make, but this guy opens the add-on in front of everyone?
Yes, I'm funny company at the movies.
Like in the first "Star Wars" how Obi-wan Kenobi tells us all that "only Imperial stormtroopers are so precise" and they can't hit the broad side of a barn with a machine gun while standing inside.
Or Forrest Gump somehow meeting President Kennedy at the All-American gathering in December 1963 (to say nothing of Coach Bryant wearing the famous hat years before he, you know, wore the famous hat).