There you go: our Halloween Super Thread in the making.
http://www.disboards.com/showthread.php?t=2408927
I love it. Have been going for the past two years and going again this year. Okay, I am a tourist - it's easy to get me excited.
There's Trick or Treat stations scattered throughout the parks. Several dance areas and photo stops with characters too.
The price depends on the date, the closer you get to Halloween the more expensive the tickets get. I think Halloween itself was $ 42 for adults last year, but I am not 100 percent sure.
Is it worth the money... yes for me. There's tons of candy. I've heard reports that the quality of candy has gone down, but I was happy. At least two stations were handing out Ghiradelli chocolate, that was good enough for me.
Also there are some characters out that I have never met in the parks. Last year the party was the only chance you had to get a photo with Jack Sparrow for example, and I never met Lady Tremaine and the stepsisters in the parks either.