I know a lot of my friends didn't get tickets who were all looking forward to going, but alias they seem to begoing to LA still to get drunk and hang out with long-time guildies.
This BlizzCon looks like it could be pretty badass, with WOTLK, SC2, and D3 being Blizzards MASSIVE headlines in up-coming releases... they'll probably have updates and demo's set up for people to play.