if you do, it is on your hopper ticket. In tiny lettering at the bottom I believe. When you show it in the game area at ESPN, they give you another card, that is coded with 10.00 of gaming credit. You can play any of their games with it, and they have varying prices, depending on which games you choose. We killed about an hour in there, and really enjoyed ourselves!
I love ESPNZONE, I have a gamecard in my wallet. They are arcade games. All sports related. I love the Airhockey, bowling, basketball and a few of the race car games. It's lot of fun. They even have a rock wall.
And the food downstairs in the restaurant isn't bad either.