So much fun!
We went on a surprisingly cooler evening in July, and it was almost empty but still really fun. I was told that it gets very crowded in the winter months. We didn't get the wristband, but if you're staying for a few hours it's probably a good idea. The stores and attractions are pretty reasonably priced. We got "married" for $10, and the ceremony actually lasted longer than some real weddings I've been to! Also bought some beers, fudge, and souvenirs. It's very kitsch, but if you let yourself get in the spirit and have fun, it's a blast!