July 11th is the official free Slurpee Day at 7-11 stores nationwide.
You don’t need a coupon and you are supposed to be able to just stop on in and get your free Slurpee. I remember last year getting a few complaints from people that their 7-11 refused to honor the promotion. Just keep in mind these are franchise owners and they can choose not to participate so you might call ahead and ask.
No purchase is necessary!