Sorry so late with this, I only occasionally scan the Lotus 7 email list summaries -- my mother in law has a great guest house with ample parking near Robbinsville NC, about ten minutes from Fontana Dam. It's a great location, and she regularly rents it out to folks for such events. Sleeps quite a few, I believe, and it's been recently renovated. Gorgeous view of the mountains, lots of wild critters running about.
If anyone is interested, email me at chris AT oxebridge DOT COM. I will connect you up with her if the place is still available.
Again, sorry for the late post on this.
(EDIT: Just confirmed, the guest house IS available and has about 4 beds, own bath, etc.)