"Not his lane" from HD guy sounds strangely familiar to" don't ask don't tell".
But i guess as long as you're at proper temp when you unplug fridge to travel and trip is not to long ,you're still ok.But i think running the generator while traveling would probably be the way to go.Most fridges/freezers in an RV will run on 110v household current, 12v battery or propane.You can get larger units that run on propane but you're probably not gonna find a NSF cert on one of those.