I've seen this question come up a few times:
Unfortunately, you cannot use more than one loyalty reward at checkout and they cannot be combined with any of our store discounts, such as the INHOUSE discount for example. Loyalty rewards are treated the same as discounts and you can only use one discount code per order.
Your loyalty points can be used with store credit, however, so if we ever send you a gift card you can use that with your loyalty points.
I hope this information has been helpful for you!