I would check the fridge burner for spiderwebs or mud dauber nests. Then see if it even tries to light, it has an electronic igniter. If that doesn't click/spark check for power to it. I will have to get the fridge manual out and see what it has to say. Mine has been working just fine, power went out the other day for over an hour and it switched right over.
Absolutely. I'd turn your tank heaters on and Mabey run your furnace while you run down the road. They are a 4 season coach and you'll have no problem. I'm in west Tex and our winters are mild. When I park I leave tank heaters on and set furnace about 45 and it's fine with temps at night 10-15 degrees