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On Wednesday, June 3, SONIC will thank its customers with Free Float Night, giving away free 10 ounce Root Beer Floats from 8 p.m. until midnight at participating Sonic Drive-Ins. SONIC plans to give away more than 3.5 million Root Beer Floats to customers coast to coast during this special event.
And starting Thursday, June 4, customers will receive a free Route 44® drink upgrade with the purchase of any combo meal.