Wow, you folks must all go to the wrong AT&T store.
I went to get my 920 last Friday, the dude who helped me was awesome. First, he offered to trade-in my iPhone 4 and gave me $131 credit* for it. Then he was like, "I take it you want to keep your unlimited data plan, right?" and just moved it over. Finally he said, "and you get this free charging plate but we don't have any right now; here's my card, call me back in a few days and I'll let you know what's going on." Then, later that night, he called me and told me that he was just going to order it for me. He verified my shipping address and about an hour later I got an order confirmation from AT&T.
It was... an awesome experience.
(Earlier that day I'd sold a Google Nexus 7 tablet to get the 920; so I walked out of AT&T with a brand new 920, a car charger, and $100 cash in my pocket. It was a good day. :D )