Carol, We camped in the Prince Wiliam Travel Trailer Village in Dumfries, VA. You can see my comments on the place in the "Campground" section if interested. Used the water tank and water from home. No outside connections.
I can't imagine not doing the little bit of winterizing to the TM in MD. Get's fair cold there.
Page 19, #6, of my TM manual says "Disconnect both lines to the water pump." Any comments on that??
This is a 2006 model. I had done all the draining and even put the pink stuff in the drains b4 going on this last jaunt. I noticed while filling the TM at home that the pump started rather slow and took a few seconds to come up to speed while charging the hot water tank.