About the sound - the balance was perfect for in the stage area. The problem with that room is that it's still fairly small, and some of the cast (such as Fairlight, voicing James Mountbatten-Windsor) project their voices naturally anyway. This meant that their microphones were turned down lower than others, which in turn meant they were much too quiet on the feed to the bar.

What we'd need is separate mike volume controls per output of the desk, which'd really complicate things! I don't quite know how to achieve this, but it's definitely food for thought.

And the showing of it in the bar was somewhat last minute anyway!