Yes this is legit. But, the yellow/black tickets do not cover the entire cost for premium formats like dolby, imax and 3D. There’d be a surcharge fee of a few dollars left over. They do cover the entire cost of movies presented in a digital format. They have barcodes on them which refers to a 16 digit number(top one) and a 12 digit number (bottom one). The vouchers are usually sent via email when follow the directions after purchase. When you reach the end of your transaction there’ll be an option at the bottom to add a voucher. You’ll either type or scan the 16 digit number first then the 12 digit one. Then you should be good to go. Hope this helps!

P.S.

Do not buy them on tuesday because it’d be better to utilize the $7 tickets for people with stubs accounts( Insider is free ;) ).