How do sweet deals from sites like DontPayFull.com work? On-site, we have a set of concessions coupon codes, concessions promotional codes and concessions discount codes. For the concessions offers and additional items, you can get equivalent coupon codes as well. When you visit the online shopping site where you are making a order from, all you have to do is key in the coupon code. It works pretty much the same mode that an actual magazine or newspaper coupon does. Once the code is used, you can find a certain percentage off the original price - which means large savings for your online shopping purchases!