White Castle's New Customer Loyalty Program Offers 20% Off Since it was launched systemwide on Sept. 1, White Castle's customer loyalty program has provided value to customers who have enrolled. Now, the free, app-based program, called Craver Nation, has a new offer that will make membership even more attractive. For a limited time, both new and existing Craver Nation members will receive an offer for 20% off all orders placed through Craver Nation in White Castle's app. They can use the offer as many times as they want to. ....

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