We will do same room or separate room depending on what the couple we are with prefers, we are pretty much indifferent ourselves.
What I like best is same room separate beds, not possible at our house, but easy enough to do at a motel. Four people on one bed can be a little distracting for me sometimes. What usually happens is the other guy gets really into what he is doing to the exclusion of his mate and myself and we have to either move to the floor or another room (Mrs. GT is really hot, so it's totally understandable to me

, and I guess I'm just to conscientious

). The floor means rug burns, which is not so good, so I usually opt for the other room in those situations.
The only thing I can think of that we have tried that we won't do again is one of us playing in another room while the other isn't, that sucked.