Hi. My friend and I are taking a compact RV from Vegas to San Fran over 5 days. A couple of the campsites we're looking at have no hookups and we're wondering how long we can go without hookups before the electric gives out. This is assuming lights on in the evening, fridge running, a quick shower each day, no blow dryers. We've never done an RV trip before so any advice is welcomed. Thanks.