FREE Medium Slurpee at 7-Eleven in July Posted On June 27, 2020 Get a FREE Medium Slurpee at 7-Eleven in July! Download the 7-eleven app and register. On July 1 all users will receive an offer for a Free Medium Slurpee valid any day in July.We know what you’re thinking! 7-Eleven Day- cancelled?! But don’t worry- we’d never cancel your one FREE Slurpee! Get yours with 7REWARDS, any day in July.