Propane or Charcoal : Seperate Tank or trailer Fed?

I would say that Charcoal is always my favorite. But there are a lot of RV parks that Charcoal can't be used so gas grill is a necessary evil(my opinion, not looking for a fight) and I have one. I ran a separate line off the coaches gas system to feed the gas grill. I still keep a couple small bottles to feed the gas grill if I needed to move the grill to a locations that the "trailer system connection hose" won't reach. Best to have a couple options on hand.