7-Eleven Slurpee Day 7-Eleven is going big for its 95th birthday. For the first time, the convenience store is celebrating Slurpee Day across all 7-Eleven and Speedway locations, giving Slurpee fans 11 days to sip on free icy slushy goodness. On July 1, a coupon for a free small Slurpee will be added to 7Rewards and Speedy Rewards loyalty members’ accounts, which can be redeemed July 1-11.