Two of this year's scarezones are much narrower than those in IOA, with the scareactors being in a more concentrated area. You will be targeted if you go through them. There will also be a chainsaw drill team marching around the park. Unlike the chainsaw-wielding scareactors of IOA, the drill team hunts in a pack (there's roughly a dozen of them) and they aren't confined to a single area. I'd recommend staying far, far away if you're not looking to get chased.
About the Production Die-ry -- While there didn't seem to be a whole lot of props strewn about, the wall treatments in Run are impressive. You'd never think it was made out of plywood, etc. This year's houses are looking much better than last year's.