SUP Magazine: How to Get 8 Days of Free Shake Shack Burgers for the Holidays

Shake Shack is giving fans eight days of holiday freebies, which began on Dec. 16. and runs until Dec. 24. Users of the Shake Shack app can enjoy a free sandwich every day from now until Christmas Eve by using the code “BURGERBLITZ” at check out with a minimum purchase of $10. The code also works for in-store purchases, though not for orders placed through Shake Shack’s website. Today, Dec. 17, you can grab a free SmokeShack burger with a purchase of $10 or more. The SmokeS...