I've been going since 2009.
It's a great event and usually has over 200 trucks in the show.
It's free to the spectators and 30 bucks to enter the show.
Stovebolt.com has a good showing every year there and thats where I'll be.
http://www.stovebolt.com/ubbthreads/
Here is some info.
http://www.alltrucknats.com/
Be there and join our group.
2-Ton