I always carry a couple of Extension cords with us on trips and plug into 15A/20A pedestal circuits to run our electric heaters or other high wattage things.
It is neat to have these so we don't over load the 30A Pedestal Breakers at times...
With our OFF-ROAD POPUP we just run the extension cords through a window flap.
All of our outside 120VAC connections for things always get connected to the campground pedestal 20AMP connections instead of the trailer outside 120VAC connection for same reason.
Nice job on your install...
Roy Ken