Does anyone else use their camper after winterizing?

I camp many times in winter - heading out to Delaware/Hampton Roads in Jan.

All I do to winterize is empty all the tanks and open the low point on the
plumbing I never use anti-freeze any where. So de-winterizing consists of
filling the water tanks and off I go. Never had a problem even when camping
in mod-20's weather. I do keep an electric heater running throughout the night
to keep the camper from getting too cold.