without having gone through all the previous posts, I can only add that communication beforehand is mandatory.....you should already have met with the provider for one or more previous meets and developed some trust both ways......talk over the plan, the logistics, the bed arrangement, back-up plans, food needs, drinking/drugs allowed?, time apart from each other each day, and lots more......make sure your travel "styles" match......
I virtually never do overnights because I like to sleep alone and don't even like somebody in the same room, even in a separate bed........the "overnights" (or longer) I have done with providers have been mostly as good buddies on a "road trip" of some kind and, even with those, we slept in separate beds or rooms.....just my style!