It is fun. Kinda neat to have the public taste a bunch of home brew and get there take. The 12 pack or case they ask for is a little low. I went through a five gallon keg last year and I got only 3 glasses out of it.
The hoppy halloween would be a great place with real judges. I don't have great brew schedule and only got 3 batches in this year. So I won't make it. The halloween theme could be a fun one.