I have showed there a couple of times for the Zone Finals, which I believe occurred during the fair.
I found that the numbers and competition are rather light, as they ran around the same time as Marshall and Sterling Finals, and a lot of regional Eq Finals.
While it a good chance to get in the ring before NE Finals and the corn dogs are awesome, the level of competition was not great.
A buddy and I went. Its a little interesting to show during the fair, lots of people watching you do the most mundane things and taking your picture. And the Mardi Gras parade going by added a little spice every afternoon. Our horses handled it well though.