Each year, Red Robin diners are eligible to receive one birthday burger reward, according to Red Robin's website. That free burger, however, comes with a catch.

Red Robin's FAQ page states that in order to claim a free birthday burger, you must be a member of Red Robin Royalty, the chain's loyalty program, and you must provide your email address and ...

Red Robin Gourmet Burgers, Inc. (NASDAQ: RRGB) has transformed its popular loyalty program, Red Robin Royalty®, making it easier for members to earn free food and perks faster than ever before.

Red Robin: Existing members of the chain’s loyalty program get buy-one-get-one 50% Gourmet Burgers through May 31. By joining the "Royalty" program, get a free burger during your birthday month ...

Red Robin: Burger (or kid's meal) Red Robin Royalty members receive a free burger during the month of their birthday — or a free kids' meal "to celebrate the little ones' birthdays." ...

And Red Robin added a dine-in only and $4.99 minimum purchase requirement for customers to get their free birthday burger. Changes to birthday rewards or redemption requirements aren’t new.