Best way to winterize yet still use unit in winter?

I thoroughly winterize my RV in the fall. I occasionally take a short trip during the off-season when there is good weather, usually for fishing. When I do I leave the water system winterized. I take along several square blue 5 gal jugs that have adjustable spigots that I put on the counter and run them into the sink for cooking and washing etc. I keep plenty of anti-freeze in the waste tanks. This avoids the winterize/de-winterize problem for me.

Miles