I've always been a little jealous of those that can get scared in the houses. For me it's all about seeing the sets, actors and effects. The best I ever get as far a scare factor is the rare occasional startle which for me really isn't a scare but more of a sudden stop to keep from walking into the actor that jumped in front of me. I watch others approach the houses with anticipation and truly walk through a house scared at every corner, I sometimes wish I could experience that.
I can't imagine what you have to do to get kicked out! I've seen pretty much everything and the staff is generally pretty good about it, they'll come over and say something when it goes too far, but they're approach is generally more a friendly reminder. I've never seen anyone get kicked out.