Seat belts are used when we travel. We have 2 children, and I will drop the dinette table to allow them to stretch out, faced forward, but they are belted at all times.
They are allowed to go to the bathroom when we are out of "city" traffic, and at crusing speed. But when done, they need to return to their seats and belt back in.
It is so much easier traveling in the MH vs when they traveled in the back seat of our truck. Instead of using the main television, I have a portable DVD player, and with headphones, they will watch movies, or they will play with their Nintendos, or slip down to take a nap.
I give them snacks and drinks (with covered cups!) and they dont whine about "are we there yet".
Interesting that the Endura does not have seatbelts at the sofa....perhaps they fell down...take a good look to see if they are on the floor under the back of the sofa.
Enjoy your trip and wedding, but if traveling in the RV, I would recommend using seat belts for everyone.
2007 Winnebago Sightseer 30B