If you are a member of Coke Rewards (or join free if you are not), go here, log in and enter code 100869373819.

Click done. You will be given the option to print a special offer from Walgreens. Buy one 20 oz. Coke get one Free.

Use the coupon during the week of 3/29 at Walgreens to get a free Hershey's candy bar when you buy a 20 oz. Coke. That's two Cokes and two candy bars for the price of one Coke.