Other mistake: That mirror behind Rob at the hotel in their room has fog (condensation) on it which means that the humidity there in "Mexico" is really really high or it's over 100°F in their room with humidity or unless it was raining inside their room, the window behind the bed is perfectly clear. (Real life that mirror would not be all foggy.) Also Rob, Laura and the hotel guy would have been sweating up a storm if it was really really hot out there. Which it wasn't. (00:13:52)
Factual error: Rob and Laura went on only 1 honeymoon back in episode "Honeymoons Are for the Lucky" (while Rob and Laura are in Missouri, at a hotel less than 1 hour away from Camp Crowder) yet in this Alimony episode Rob and Laura say they were in Texas but went to Mexico for their only honeymoon.