Sonic is celebrating Cinco de Mayo by offering half-price drinks and slushes all day TODAY (Tuesday, May 5th)! No coupon necessary. Stop by any participating Sonic Drive-In and treat the whole family!  Don’t forget you can get half-price shakes after 8 pm at Sonic all summer long as well! Thanks, My Frugal Adventures! Don’t miss out on these HOT offers! Sign up […]

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