Download the Sonic app and get a Free slush or drink. Offer includes medium Famous Slush, Soft Drink, Iced Tea, or Limeade. Offer excludes Ice Cream Slush and Frozen Lemonade/Limeade. Add-Ins cost extra. Not good in conjunction with Happy Hour, combos or any other offers. Offer valid for 30 days from the date of issue only at participating Sonic Drive-Ins.
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