They could of course work in the seats for whatever they're doing, depending on what they look like.
I've only ever been in that building once, and that was back in 2011 and I never actually saw the show so I wouldn't know if that would be possible.
Given that these scarezones are supposed to have more actors, we can assume that the zones might have to be bigger. What if they use a bit of Shrek as an interior area?