If you'll be camping in Yellowstone's Mammoth CG (no reservation; first come, first served), know that you'll be at 6200' elevation. After a few days, my usually rock solid Honda Handi generator died. Turned out the problem was a fouled spark plug, due to the high elevation. Once the plug was cleaned, the Handi returned to its' usual high state of reliability. I don't remember having any trouble with the stove or furnace. Some RV refrigerators don't run well at high altitudes (mine was fine). Just keep the elevation in mind if you do run into any weirdness.