Thanks for all the words of advice. Much appreciated. This will be our first really cold weather trip with freezing temps at night. For us SoCal folks 25f is VERY COLD. :) The good news is the daily hi will be close to 50f so that should heat things up during that day.
I have my tire chains ready to use just in case. Looks like we may get a little snow while there but mostly at night while sleeping according to the forecast for now any way. We'll see what happens.
My black and grey tanks are exposed to the air. We have a 24ft class C. Very basic no frills RV. The fresh water tank is inside and not as exposed. We rarely hook up to water connections anyway so we will fill our water tank and use that.
Does putting a little anti-freeze in the black and grey tanks help since they are exposed? I have honestly read so much varying info on this topic that I am not sure anymore.