Sonic Drive-In: half price all shakes on Wednesday March 13th
This Wednesday, March 13, enjoy Sonic Drive-In special refreshing deal. For a limited time, head to your nearest Sonic Drive-In location and get all shakes for only half its regular price! You can also order them ahead of time with the official app. Do not miss out; this offer will be available during the specified day only. Shakes are limit to five per customer. Valid at participant locations only.