My wife has a persian that she loves, and, accordingly, the cat travels with us and the rest of the crew. See my sig for the list. The cat travels in the trailer when we are towing. He will find a cubby hole and relax. We've tried him in the TV, and he just can't stand it.
While we are at a RV park the cat likes to come outside with us. We learned on our first trip with him that he still likes to roam, and is ambivalent to his surroundings. It's another story, but the result was that we now put him into a harness and leash. The leash is tied to a brick, and he no longer roams.
He can still get around, but doesn't get far with that brick.
Have fun and safe travels.