I've been quietly following this thread for a few days... figured I'd chime in (finally) and share my experience since I found that of many others to be useful...
I'm in the same boat as many others following here: 64gb AT&T, ordered 1:09am PST, status changed to "prepared" yesterday evening, blah, blah, blah
I just received my shipping notice about 15min ago... yah(sarcastic)
I called CS after hearing about all the free *****, played the "more flies with honey" technique. The rep sympathized, but also apologetically seemed to have no answers to any of my gripes, while at the same time agreed I had reason to be frustrated. At one point she even started listing all other (non-apple) retailers that may possibly have stock as weird as that was. I was able to get her to tell me my iPad was coming from Chicago, but she said that she had no control over the speed it was to be shipped... I don't think she was BSing because she was legitimately trying to help me find ANY answer as to where/when it was shipping... also got the cover credited...
So recap... got the ship notice says expected 3-22 (delivers by 3-24) and I the rep says coming from Chicago, I live in NJ... I know its been said about a bazillion times but how is 3-5 days from Chicago considered to be "fast" in 2011? food for thought