The Blue Ridge Parkway is some 460 miles long and has a small no-hookup camp ground about every 50 miles along the way. There is sometimes a way-station located near the camp ground with fuel for your truck. One of our most enjoyable camp ground on the Virginia Skyline drive side is Loft Mountain - again no hookups...
The speed limit is max at 45MPH and a whole lot of 20-25mph going around sharp curves and thru tunnels and via-docks... At dust the roads become dangerous trying not to hit the wildlife running across the road...
It is a Motorcycle haven and alot of slow moving traffic with cars pulled off just about anywhere getting a good photo of something neat to see... There is surprising some bicycle traffic on the parkway.
You don't see many large RV's on it... You also need to plan your exits and only the main exits where major roadway cross the parkway are designed with easy access. Just don't think you can take any exit to get off the parkway with a large RV as you will find sharp winding curves and steep inclines usually at the top near the parkway and might be where you don't want to be with your large RV... I suspect there is only 3-4 places to get gasoline on the whole parkway without driving down to the local towns on the main roads in the valley.
We have driven the whole length a couple of times. It is perfect for tent camping and lives up to its beautiful scenery with lots of rocks and mountain living experiences... I was pulling my OFF-ROAD POPUP Camper on the last time we drove most of the entire length between Virginia and North Carolina.
Very enjoyable trip if you have lots of time on your hands and like to explore things.
Roy Ken