[LHaven]

I know you've already gotten a ton of answers, but here's mine.

In most trailers, the only appliances that run ONLY on propane are the stove and the furnace. Everything else will run off 120VAC if you have it available. (Some older or less expensive rigs have propane-only water heaters.)

DW barely uses the stove, as a major component of our vacationing is trying the local cuisines, and there's a microwave for when we absolutely must eat in. And we live in the south, so we rarely use the main furnace (a small 120VAC ceramic heater is usually all we need, when we need anything).

So the only time we really use propane is when we're literally on the highway, to run the refrigerator. We refill propane almost never.

Now, you're parking, and in some pretty cold country. Electric heaters to the extent you would need them will max out your power service and blow breakers. So, lots of furnace propane, plus whatever you are likely to use on the gas stove.

Pay some attention to simple insulation as well. A few months ago, we discovered that our outside shower (thin plastic cover) had supersized holes in the rear shell for hoses, all completely open to the inside of our under-sink cabinet. (Shocking revelation to see big daylight coming out from under the sink on a rare day the shower cover was open.)