Thanks GhostofSpookie. This bellboy prop's purpose is to occupy guests for about 30 seconds as an actor scoots down the hall ahead of guests and circling back for another group of guests. As the actor leaves the guests ("Mr Schnebbley will take your bags, etc") he hits a doorbell button triggering the prop. Given the young age of kids going to this haunt, it might actually be too scary.
Other rooms include an elevator, a dining room, a bedroom, and a scene similar to the Psycho shower scene. I'm excited to wear a Zagone moving mouth mask, as one of the bellboys, which is really cool (and you can breathe and people can hear you). The one I'm wearing is called "exhumed" but this video shows two masks with similar mouth action.