My DD and I were there in 2006 - it was awesome and included in the price of admission; in fact, it was a total surprise to us. They had places set up to get candy (tons of it), great halloween decor, and the Seamore show was a special Halloween theme. Also tons of dressed up costume characters around. I'll try to get some photos posted so you can see. Not scary at all and I don't think there was anything in the evening - in fact, I'm not sure the park was open late - we left around 5 to go to the Discovery Cove dolphin sleepover.