It transpired that there was enough of us (about 22?) to make up 3 Metafilter teams and that being a spectator wasn't going to be an option. As I struggled to come to terms with this responsibility, a large group of Redditors arrived.
As I watched them file in, my heart sank. They had the confident air of people who were very good at Pub Quizzes. These were clearly people who knew a lot of trivia.
Their leader, Lowercase_Drawer, came over and introduced himself, and spoke to adrianhon. I didn't really catch what he was saying, but from his poise and deliberateness, it seemed like he was saying the kind of stuff a Bond villain says when they have the upper hand.
I won't spoil the ending, but after the build up on reddit, I was pleased with the results.