Plot hole: After Ann retrieves Tibor Zoldan's music box from the pawn shop, she finds the incriminating photos of her Nazi father, Michael Laszlo, hidden in it. Even though Zoldan (who had died) could have redeemed the music box from the pawn shop within a certain time period, it makes no sense that he would have pawned it with the photos left inside. The photos were how Zoldan was able to blackmail Laszlo. It's highly unlikely he would have forgotten they were in there.
Plot hole: The odd couple tails the suspicious guy bossing around the car company mogul and run a check on the license plate. The response is "Car registered H.W. Scully. No known residence, only address PO Box 25047 Detroit." They tail him a bit, end up in the bowling alley and lose him in the commotion. After that, Leno asks his buddy at the district if he has "anything on that guy Scully", and the answer is "This guy has done anything but rape Bambi. Several weapons charges, assault and battery, he beat a murder rap in Sarasota" etc. And of course, an address. (00:56:35 - 01:01:35)
Plot hole: When the teens in this film come to camp, they see in the bathroom a sign spray-painted by one of the kids from Part 2 that says "Fuck Angela Baker." This doesn't make sense because in the second film everyone only knew her as Angela Johnson. So the sign should have said "Fuck Angela Johnson."
Plot hole: They seem to break a lot of rules in the main event between Mimi Lesseos and Jan Mackenzie's. They brawl outside the ring long enough to be counted out, choke outs on the ropes long enough to be disqualified are some examples.
Plot hole: Given the store's being bought by a retail chain like Kroger's there's no reason Bill's partner can't sell him his share in it, get half the price they're receiving for it then have Bill make quarterly payments to him. They could've also got the new owners to keep Bill on as manager as well as keep their employees or void the sale.
Plot hole: It seems that after committing 6-odd counts of aiding and abetting, literally right in front of the strict Police Captain father of one of them, Ted and for that matter Bill, would be lucky to only go to military school, regardless of passing or failing one particular class.
Suggested correction: The threat of Ted having to go to the military academy in Alaska was because he was going to fail. Since they passed and graduated, there's no need to attend the military academy. Some time passes before Rufus brings the babes to Bill and Ted, so we don't know what punishment they were given.
This isn't ordinary misbehavior, it is a felony, what do you think the punishment would be? No TV for a week?
I don't have to speculate what their punishment would be. Certainly neither would be sent to military school (which is a TV and movie trope that wayward children get sent there anyways). Your mistake entry is not a plot hole plain and simple.
Plot hole: When cousin Eddie kidnaps Mr. Shirley, Shirley's wife immediately calls the police. She describes Eddie as 'brutish and huge' or something similar, and wearing a 'blue leisure suit'. She also mentions that she got the license plate number of the vehicle. But how did the SWAT Team know to go to the Griswold's house to find Mr. Shirley? Eddie's RV is not registered in the Griswold's name so the plate numbers would not be much help in finding the culprit.