When Albert and Bogus are fencing in the park, one external shot shows him with a stick. The internal shot shows him with a sword. In Harriet's external view, he has a sword.
Albert's mother's car stalls at the intersection of Desert Inn Road and Paradise Road, but the collision takes place near Jerry's Nugget, more than four miles away in real life. The wrecked car then reappears at Desert Inn and Paradise.
As they drive away from the airport, the boom mic is clearly reflected in car windows.