Re: Dinette/bed question
The table/bed center in our camper uses the standard church/FD/VFW hall-type folding legs, and does not attach to the wall. There is a loop of velcro in the middle to hold them up when folded.
A pedestal would probably be less obtrusive at the moment of sliding into the "booth" for dinner, but they are usually located near the middle of the table, as opposed to legs at the ends, and so might bump knees during the meal.
Someone said "Making good decisions comes from experience, experience comes from bad decisions." I say there are three kinds of people: those who learn from their mistakes, those who learn from the mistakes of others, and those who never learn.