Similar story for me on the 3rd --- had Easter Egg hunt's in the afternoon so knew I need to get there early enough to get out by Noon. Got there around 7:AM and was the first in the reserved line -- I could have arrived at 9 - and still been out in plenty of time. Sounds like your store had a longer line for 3G's than mine did for release day ipad's --
good job, dad!