7-Eleven: Free Slurpee Tomorrow (07-11) July 17, 2011July 10, 2011 by Steph Post contains sponsored/affiliate links and I get commissions for purchases made from links. 7-Eleven is celebrating their 84th birthday and giving out free Slurpees on 07-11. When: Monday, July 11 12:00 AM until 12:00 AM