You have of store credit. To use it, simply place your order and you will be able to choose store credit as the payment method when it comes time to pay for your order.
We < 3 are customers so much we just had to find another way to express our appreciation! There's no phone booths anymore, and most arcades have gone the way of Inky, Blinky, Pinky, and Clyde, so what else are you going to do with that stack of quarters? It just makes cents!