Ooo, I saw a restaurant like this featured on a police drama-type show once, but now I can't remember which show. (That's going to drive me crazy, LOL.) I just remember the plot was that someone was murdered during the dinner and since no one could see anything, there was no way to know who had done it. (Until the investigators solved the mystery, of course. I think it might have been one of the waiters.)
Glad nothing like this happened to you, Corinna.
It sounds like a really neat evening!
Kathy