What do you mean? No one and nothing is off limits at Kings Island's Haunt, after all. Be they dead, alive, or somewhere in between! All's fair game.
And I highly, highly doubt Kings Island's Haunt will be an up-charge this year. If it is, it will be free for season pass holders. How do I know? Because season pass holders were told that was a perk of their passes, and if the park tries to change it now, it won't last long before the paying customer forces them to come to their senses. Remember last year when they decided that everyone needed to vacate the park for an hour, then return for Haunt starting at 7 PM? Many of us here were struck by how unlikely that was to actually happen, and lo and behold, it did not happen.
I can see a loophole though. Kings Island technically promised free admission into the Halloween Haunt event, not free admission into each house... If they stooped that low though, it would be pretty stupid of them.
That does sound like a loophole to me, they have upped the price for parking, they charge for that Dinosaurs Alive along with that 3D movie?, the fast line thing. Only thing that left is Halloween Haunt, and the water park.