Promotion and gift card codes are added to the same spot. Please see below for more information. Any active promotion code can be applied during checkout. Once a promotion is expired, its code can no longer be applied, and codes cannot retroactively be applied after an order has been placed. Only one code may be used per order. You can find the code box during checkout in the following locations depending on your device: Mobile Tap the order summary link during checkout (see screenshot). Desktop On the right hand side during checkout (see screenshot)