Multiverse Reactor

A conference booth buys you thirty seconds with someone walking past. A house buys you a week, and the people who turn up have chosen to be there instead of on the show floor.

That is the whole reason to do it this way. The sessions ran in a living room with everyone on sofas, which changes the questions people are willing to ask. Builders came back across several days rather than collecting a sticker once. And the conversion number is the only one worth watching for a thing like this — not how many registered, but how many were still building afterwards.