I have just found out that the City Deals Promo codes are working now! So, if you have a promo code for the Twilight Premiere, or from a coupon conference, it should be working now.
If you still have problems with your code, you may want to contact customer service and see what the problem is.
Gayle
The coupon code which would not work before is now being "applied" but the price does not change. Do you have to give your cc # before they will actually apply it?