Part of me feels like I shouldn't be surprised, but part of me is: There are no more tickets available for MineCon, the inaugural MineCraft convention to be held in 18 days in Las Vegas. When Notch first floated the idea of a con back in May, the response to it did not suggest such a strong response.
Lo and behold, momentum built for this. The day tickets went on sale, the rush to buy them jammed up the servers. organisers were able to swing a group rate deal on lodging at the Mandalay Bay, and that made it affordable enough that all the badges were gone three weeks before kickoff.
In addition to all of the panels, discussions, demonstrations, meet-n-greets and whatnot, MineCon attendees will get free codes for the alpha versions of Scrolls and Cobalt once the games are ready.