We are!  I just got to sit down and settle into the hotel and was reading the Pax stuff that came in the swag bag.  And read that there is a QR Code hunt going on the floor of the Expo.  There are 32 Codes somewhere out there and you need to scan them! Once you scan them you need to figure out the clues and letter that spell out the phrase for the prize, once you figure it out you just have to go to the Info Desk and tell them the phrase and you get a sweet zipper pull.  Yeah its a lot just for a zipper pull but its all about the hunt!