I've been a Chili Judge here in Arkansas, in California and in Wyoming. The thing that I remember coming away with that was most important to me, was the fun, the smiles and the friendships that developed over a bowl of chili. Please, relax, talk to people and don't ever lose sight of the fun!
Sounds to me like you're the real winner, even if you don't walk off with the official prize. And anyway, if you did, what would you do then? They're probably holding out on you just to make sure you come back next year!