$1/1 Diet Coke 16 or 20 oz + Publix Scenario

Diet Coke, on Facebook, would like to thank it's 1,000,000 fans.. and it to so they are giving away $1/1 16 or 20 oz coupons. Personally I will be printing off this coupon to give to one of my co-workers. Everyone likes to get a good deal. And now for the Publix scenario:

Diet Coke, 16oz $1.49
(1) $1/1 Diet Coke 16 or 20 oz product
Final OOP: $0.49

**it only let me print the coupon once.. anyone having better luck???