Get a Firehouse Subs coupon for a free sub on your birthday when you register for the Firehouse Rewards program.
You can register online, or via the Firehouse app.  CLICK HERE to download the Firehouse app for iOS or Android.   Or, to enroll without using the app, CLICK HERE.
You'll get a coupon for a free medium sub on your birthday.  The free birthday sub is explained in the Firehouse Subs video below.