Just make sure you don't get bored, pack up and go home like you did at Uk Games Expo 2008, you had your entire team go home including the gm's that where running a game, only an hour into the afternoon session, my brother who has learning difficulties was playing in the Runequest game and was absolutely distraught at the gm having to leave.
So a friendly suggestion, If you get bored, you can go home, but that doesn't mean your entire team follows, including those that are running a demo game.
Oh did the organizers get in contact with you about that, they said they did. I know you weren't there at the 2009 Expo. None of us went to the 2010 Expo, couldn't afford it.