I can't help you with the haunted drive-in portion of your query as I know nothing of it myself. I did however see all three of the adult spookhouses. I would definitely say that the Toxic Tunnel of Terror ranks as the best in the park. Others may say differently, but this is just my personal opinion. The spinning tunnel in a portion of the horror excursion is absolutely mind bending. It had me and Wolfhounde completely screwed up. If you want your significant other to get a good chuckle, walk in front of her when you take that section of the house. It's the funniest thing she'll ever see as assumed from a response from CP Irvine. I hope this has been helpful. Have fun closing day. I wish I could go, but I have laundry and dishes to do that day. (I know, bad excuse. I really can't go though.)
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Laugh ye not too hard at my piddly stats.
MF: 3
Magnum: 5
Raptor: 2
I'm working on it, Jeeze!!