We went to the one last week and it wasn't bad.....of course now that I've said that, everyone and his brother, sister, aunt, uncle, long lost cousin, etc. will be out there to prove me wrong.
Seriously, get to DAK at the begining of the day and before you go thru the turnstiles there will be CMs with wristbands. Have them attach it to you. You are now guarenteed the priviledge to buy 2 Stitch Adventure pins before noon. After noon, it's who ever gets there and are there any left.