http://www.biltmore.com/plan/stay/reservations.shtml
BTW, when I was in college I backpacked a pony keg to the top of Devil's Courthouse and hosted a party complete with musicians and about 1/2 way down the face until the rangers ran us off.
It's not a good party till the rangers run you off...
Yikes! $200/night is a bit pricey!
Last time I was in the area we didn't have time to do all the hikes. The Devil's Courthouse looked like a neat place to hike.