Question: After Otho and the Deetz family are attacked by the Beetlejuice snake why do they stay in the house instead of fleeing immediately?
Question: Otho says he was a paranormal researcher until "the bottom dropped out in '72." What does that mean - specifically, what happened in 1972?
Question: Whenever Beetlejuice is shown in the model cemetery that Adam made, does it mean that a "real" Beetlejuice is the real cemetery in the town?
Answer: No. It's not meant to be an exact replica of the town cemetery. Beetlejuice just inserted himself into it.
Answer: They're still convinced that they can make money off the house and ghosts that inhabit it. The promise of wealth can make people do strange things, including ignoring signs of clear danger. So they're remaining in the house in hopes that it can eventually make them a lot of dough.
TedStixon