I have never taken cat on RV trip but may have to. She is scared to go out and prefers inside. She likes to run from one side of house to the next and that is her exercise. In a small camper what ...
We initially take our cats for rides in the car whenever possible. After a month they've settled down and are travelers errr sleepers in the RV while moving.
And yes they train us to be very aware of them when we go in/out.
When moving we keep a 6' red leash on them so that we know exactly where they are when stopped and operating slides. And it helps to thwart their escape plans.