In fact, you’ll be quite energized when you get a free cup of coffee from 7-Eleven. From Sept. 29 to Oct. 1, you can redeem an offer for a free cup of coffee once a day. You have to be a 7Rewards member to get the offer and redeem it. Then, enjoy your three glorious days of free coffee! Look in your rewards account (online or in app) at the time for the offer.