Bike VA is very well-organized. This year they are not moving accommodations every day like in previous years, so your campsite (or motel) will stay put for a few days and then only move once.
I have done Bike Virginia for 3 years, and this will be my 4th. I don't camp, though, so I stay in the motels. Something about a hot shower and clean sheets after a long ride...For the motels, they pick up your bags and bring them to the next motel. For the campers, if you go with Pedros (or whichever camping service they are using), they set up the tents for you. You take your baggage to the truck and they move it to the next campsite. I don't know what system is in place for the baggage when the days that the camp stays put. You might want to call them and ask them, especially since this is the first year they are doing more of a hub-and-spoke arrangement.
The rest stops are well-stocked and are located about every 10-15 miles. It's really a fun, fun ride. There are different distances you can ride, too. There are lots and lots of riders, and it's a good time.