I'll be visiting the game site this evening -- paying the theater manager, checking things out and seeing if they have a 16-ton weight I can drop on people.
Anyway, I've reached the point where it's no longer a huge worry. Or rather, there's nothing I can do about it at this point. I've done what I did, and now I just hope people show up and have a good time interacting with each other.
It's definitely different working with a multi-game schedule. Everything doesn't have to be resolved by the stroke of midnight. The advantage is that I don't have to miraculously squeeze everything into one night. The disadvantage is that it had better be interesting enough that people want to come back five more times.