there are a few private CGs just off the BRP. You can see them from the Parkway. they do have full hookups.
As for what to see on the Parkway. there are endless overlooks. Waterfalls are scattered out along the BRP as well. To see much of anything else besides Cone Mansion, You will have to get off the Parkway
Tweetsie Railroad is just off the Boone exit of the BRP. Mount Mitchell is also just off the BPR, the highest peak on the East Coast. Linville Caverns is also just off the BRP. Little Switzerland is a very cool place to visit. Many people like Blowing Rock.
Of course the BRP ends in Cherokee NC, and there is a lot to see there. The Smoky Mountain Railroad is near there as well. And from there you can drive deeper in to the Smokeys, to Gatlinburg, and Pigion Forge, and DollyWood
