[Minnie]

We camp the entire year, so through the winter. We de-winterized too early last year & got a surprise storm & froze up - and it only got to about -5 or so during that storm. We were lucky that there was no damage. If you don't have tank heaters & power, I'd haul water. We use our bathroom during the winter, very sparingly (like emergency only, in the middle of the night type thing), and use anti-freeze for flushing, so you could do that in terms of bathroom stuff if absolutely necessary, use their showers for everything else. We have a bit of a different set up, a permanent spot, so our camp experience is probably a bit different than some.

If your site will be powered, I can dig around and see if we have the tank heaters I picked up. You need to be able to plug in for these though, to keep them operating the entire time so the obvious doesn't occur. If I can find them, you are welcome to them, free. We got them for free from someone who never used them, so I'm assuming they're functional but not entirely sure. I'd have to ask the husband person if we still have them, I'm not sure where they went.

ETA: agree with what Sliver said about the little space heaters. We use those when we're camping & it definitely cuts down on the furnace kicking in so much. Sometimes we end up turning the furnace down quite a bit because those little beggars can really throw the heat. We aim one at the door and the other sits more or less in the middle of the trailer, under the table (we don't have a huge trailer).