The way amazon usually does it is they give out the promos to anyone who orders during or before the credit implementation. I would expect to see the $20 credit in your account soon. If you're worried, you could also cancel your pre-order and re-place the order. They don't charge you until it...
Yeah I wish the Limited controllers came with at least a rechargeable battery pack...I like the design :) but yeah CAG's don't seem to like the design very much overall.
Finally got mine, and already sent it back. The triggers don't feel good to me because of the length. The sticks are harder to press in than the standard 360 controller, and the bumpers/programmable bumpers are loud when clicking. As well as this, when the controller vibrates it makes an...
As is the Classic track pack lol :/ can't win 'em all I guess.
EDIT:
However, with the Metal track pack you just need the code, and not the disk to download the songs. Not sure if the Country Track Pack is the same way...but maybe do a bit of research and find out :P...
--EDITED 1/24/2011--
Some great deals still going on track packs!
AC/DC Live: Rock Band Track Pack
http://www.amazon.com/gp/product/B001KAN1VO/ref=oss_product
PS3-$5.19
Xbox 360-$5.19
Nintendo Wii-$5.93
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Rock Band Track Pack: Vol. 2...