[Mrgnjr]

In addition to the house allowing the floors, you could also use signs for narration, and for telling people to wait in a room for narration and inform event personnel which room they're in that needs someone there for the story.

I also agree with GameMaster85 about a literal weapon given to one person being the wrong way to go about an event with such a large grouping.

Houses also allow you to limit the speed of an event, as you can lock/unlock doors, and even hide the keys, other useful items and/or notes in crates, chests, etc...