Red Robin Gourmet Burgers, Inc., more commonly known as Red Robin Gourmet Burgers and Brews or simply Red Robin, is an American chain of casual dining restaurants founded in September 1969 in Seattle, Washington. From Wikipedia
Customers can claim a free SmokeShack burger with a $10 minimum purchase through May 11 by using the 'BURGERMONTH' code online, via the app, or at in-store kiosks.