In one quick scene, a TIP logo is visible on the driver side swinging door when the truck is driving down the street. In all other scenes, this logo is gone.
When the police call Pete to tell him about Mike's arrest, the cop states that it is the Van Nuys's Police Dept. calling. Van Nuys has no police dept. It is a division of the LAPD.
When Al and Ray go into the bar at the movie's beginning, Pete's El Camino is seen with a Canadian license plate on the rear and a California plate on the front.
When Ray (John Schneider) is hitting on Turtle the new secretary in the first shot you can clearly see a large diamond ring on her left ring finger. On the next shot after Ray speaks the wedding ring is gone.
At the end of the movie, on Christmas day, the residents of Willow Creek (who have no money) are able to hire someone to spray fake snow on Al's house. Something like this would be very costly. Especially at the last minute AND on Christmas day. However, with Domingo, the shepherd's cane being seen next to the front door of the house, it could easily be another Christmas miracle.