Download their mobile app and create an account to get a free slush or drink. You can choose from either a medium Famous Slush, Soft Drink, Iced Tea or Limeade.
Offer excludes Ice Cream Slush and Frozen Lemonade/Limeade.
Celebrate Family Night from 5pm - Close on Tuesdays with Half-Price Cheeseburgers over at Sonic Drive-In! Single-patty cheeseburgers only. No coupon needed. Simply ask for the promotion when you order to receive your discount.