Blizzard Entertainment will sell BlizzCon tickets on April 24 and April 27 at 7:00pm PDT.
One or two steps not taken care of in advance, or the equivalent of one or two seconds lost before you hit the checkout button might be total disaster.
From a statistics point of view, Blizzard CEO Mike Morhaime revealed two years ago that people who did not queue a BlizzCon ticket order within the first 30 seconds, didn't even get a ticket.
Blizzard Entertainment sold over 25,000 tickets in 2010.
Blizzplanet offers some good tips on how to be prepared before the clock hits 7:00pm PDT.