There are a few different iterations of what a room crawl is. At its base, you go to various rooms and are served a signature drink of that room (like a bar crawl). Sometimes games, trivia, or the like are added to the event as well at each room.
Sounds like a lot of fun. Wanted to make sure it wasn't some lifestyle event where we were getting into something without realizing it. We only have the lowest level room, but would be happy to host a stop. Let us know what we need to bring (game, trivia, etc).