It is dangerous to be restrained in a moving motor home, so I'm going to let my kids roam around while I drive.
Are you sure about letting your kids out like that? That seems pretty dangerous!
Yeah you are right, thanks for telling me.
I know that they are impatient, but you should wait until you are parked. You should not let them roam freely when you cannot be there to watch them the whole time since you are driving.
That is fair. But what are you going to do if they need to pee real quick, there is no shitter around, and mommy and daddy have all that pee inside. How about asking, "Hey kids, do you have to pee real quick?" Ask them for their answer. Go for it!!
At that point, you need to find a restroom at a gas station or a restaurant so they can use it. There are ways around this problem that are available to you.