Expo 2.0 and prior had many games go down by Sunday, after constant play throughout Friday and Saturday. Tech days where limited by people's personal obligations.
Expo 3.0 had much more love leading up to the event and since tech days have taken place 1-2 x a month and weekly very shortly. Chuck has been great in getting volunteers on site and keeping it fun.
Can't wait till the next tech day and the main event.