Be sure to check the bottom of your receipts if you visit Sonic. Some of the receipts have a phone number for a short survey on the bottom. If you call the number on the bottom of the receipt, and answer a super short (mine was 3 questions) survey, by entering numbers on the phone for answers, they will give you a redemption code. Write the code on your receipt and bring it to any Sonic to redeem your free drink!
Free Route 44 Fountain drink at Sonic!