Got the code last night, got the ULC Today, should be arriving soon, I would say if you guys don't have it by tomorrow morning to email Amazon. I know on some of my pre-orders its taken up to a few days to get whichever promo was associated with the game. Not sure why that is, you would think it would just mass email everyone a different code at roughly the same time.
The codes are being sent out, I received mine around 9:30pm EST. My brother didn't get his Premiere Club code by the time I had, so he e-mailed customer service and they replied with a code immediately. If you're worried, or just impatient, send customer service an e-mail. Also, no scratched or loose discs between me and a few people that I know who also ordered the ULC Edition from Amazon.