We will be winterizing our TH next weekend but that does not mean the camping has stopped for the year. I will camp up until the end of December and starting again by early March but do not use most of the plumbing system because of the fear of freezing up. If you are resourceful, there are ways to be very comfortable.
Take fresh water with in blue containers of similar.
Use a garden sprayer fashioned with a shower nozzle as your shower source.(Heat water on stove before pouring into garden sprayer.)
Drain grey water into appropriate container after showering if below freezing.
Use portable commode as toilet. (Most campgrounds have vault toilets which can easily be used for dumping.)
Heating can be as normal by using the furnace or electric heater depending on electricity source.
Enjoy the outdoors during some of the best times of the year.