Cold Weather RV Trailer Living Prep Tips

Spent 2007 & 2008 in a 36 foot motor home in Dayton Ohio. Propane was a bank account killer.
Wound up with bales of straw around it to stop the wind going underneath it. Used 2 electric heaters and an electric blanket. There was a ceptic tank 10 ft away so every two weeks or so I dumped my holding tanks. I filled my clean water system with rv antifreeze during the winter and used antifreeze to flush with. I shower at a friends house nearby during the winter.
I worked 3rd shift so cut the heaters down at night.

That's the second time I've heard about electric blankets. I'm kinda wondering about my sisters advice, she lives in a much colder climate near Bend Oregon. She said open up all internal cabinets with plumbing, access panels etc. and keep the heat up to get heat to this piping where it comes into the trailer. I expect to use a lot of power this winter, would rather pay the electric and gas bill than deal with trying to defrost a black water tank etc.