Factual error: When Clay, Julian, and Blair are driving from Palm Springs to Los Angeles almost at the last scene, Julian dies as they are driving through Joshua tree. That would be the opposite direction to travel from Palm Springs to Los Angeles.
Factual error: When Mrs. Cratchit passes the shop after buying the goose, the sign says butcher, but in that era, you would buy a goose from a poulter, seafood from a fishmonger, and beef, etc. from a butcher.
Factual error: The movie is set in New York, and Rocks is fighting wolves. Wolves are no longer found in New York.