I'm not a Class C pro but think it is totally irresponsible for a parent to allow their children, or anybody else, sit un-belted in a RV. In Ohio I worked at a location on "crash corner" seemed like a magnet for car crashes and frequently some victim would come in to use the phone, etc. My comment was that they should sue the seat belt manufacturer if they got hurt. by the looks on their faces it was obvious they hadn't had them fastened.
I don't care if adults don't fasten theirs, as that is part of Darwin's theory, but to subject their kids to that is criminal.
that is one of the reasons I got turned off by one Travato model, only two seatbelts.
bumpy