I plan on being there. I've heard its a decent little time.
There's a cruise-in in down town Hiawassee Friday night, then the show/festival is Saturday.
I'll be getting up there Friday some time and staying til Saturday evening.
EDIT - Oops, just realized the link you posted is for the one in Dawsonville.
I'm going to the one at Lake Chatuge -
http://www.gammoonshinecruizin.com/