I'm trying to go the Saturday of opening weekend. I don't know which days I'm specifically attending except for Halloween; I asked off for it months ago.
I went last year and it was awesome, I'm planning on going this year on Halloween too. It's like what Jumboshrimp said, it isn't as busy and the scareactors get a little crazier since it's the last night. I highly recommend it!
I thought that too when I first saw the pilot a few weeks ago. I just started watching the show after hearing about it being a possible theme to a house or scarezone. It would be awesome if they used it.