DutchmenSport: I have a portable Generac generator for my house, but the place that services that (one of 320 service centers that you found) won't work on an RV generator. Somehow they are a different kettle of fish (or maybe they don't want to work on one that is buried in a hole in a motor vehicle).
I travel with dogs to dog shows, and frequently am parked for days at a time in an asphalt parking lot with no power hookup. I use my generator a LOT in order to run air conditioning.
Dog shows, racing and lure coursing with whippets!
My first RV, 1998 Coachmen 22RK, Ford E350 V10 Triton