Need tips and experiences for first time winter camping.

I camp all winter long in AF 990 here in Mn. Grandkids hockey games snowmobiling, ect Use the camper just as in summer. If I can find place with electrical hookup that's the best then I run electric heater, otherwise batteries and generator if needed. I put insulation in skylites, door windows, bunk windows, under bed. wired basement fan so it runs all the time if needed. I carry a honda 2000 with extened run fuel tank if I am going to be gone for a long period of time.