Thanks for all the replies so far and please keep posting. When we stay at a campground like we are at now, the cats go in and out day and night because they know the place and it is hard for them to get lost.
This is tough for us as we know finding a sitter would be difficult. They get uptight after a couple of days in the rv and wreak havoc, not during the day but at night and in the TT you can hear them jumping from the sofa, window ledge to the floor.
Seeing it's winter and where we are camped now, with the electric blanket they are pretty good at night on the bed until about 5 a.m. Sorry for the rambling but thinking out loud.