First, I wouldn't have the dogs riding in the RV on the road, too stressful for them. Second, what is the point of having an outside door, the owner has to walk outside to use it since the dog can't let themselves in or out by themselves, easier to let them out the main door instead. Third, if my dogs are wet, I can make the decision at the front door to dry them off immediately and/or put them in their cage that is right next to the door. I'm happy with my setup.