The demos of course would be limited to people who picked up goody bags at the event, or whoever buys one on Ebay first.
In the past they have given out WoW codes for unique items or pets in-game. Also little knick-knacks such as stress-relief balls in the hues of a health and mana globe (last year's event). They also gave out these:
Yes. It is what you think. People only got them by finding a 'relic' in the Diablo 3 demo last year. Signed by the developing team of Diablo 3. they also gave out shirts, card decks, some candies, etc. What you should see is
the most kickass game unvieling evar.
And don't ANY of you ask me what music he's playing.