Go here to reserve the free breakfast item of your choice.
Chick-fil-A Chicken Biscuit
Spicy Chicken Biscuit
Chick-n Minis (3ct)
Chicken Breakfast Burrito
Follow the directions and reserve your time to use your coupon. An invitation will then be emailed to you and it should be printed and taken to Chick-fil-A for the freebie during the promotion starting September 6th. I noticed their is a number showing remaining reservations by the stores in the area.