Starting September 12th going through September 18, 7-Eleven will be offering Buy 1 Get 1 FREE Slurpee Drinks — any size! Even better, if you take advantage of their 7Rewards app, both Slurpee drinks redeemed for this promotion will count towards the “Any 7th Cup is FREE” deal! No coupon needed. Valid at participating locations only. Find a location near you!