Don't forget the personal interest questions.   I think I could put up with many tripping styles but personality would make the big difference for me.  For example, I don't like being with people that talk loudly or too softly; or, people that talk about themselves all the time.   I can think of a good number of other questions but don't want to get into a laundry list of personality related questions.  Another area might be on environmental impact.  I know someone that is really bugged if anyone uses biodegradable soap in the lake or burns plastic in the fire pit.  

Mal