7-Eleven: Free Medium Slurpee!!
Get a FREE medium Slurpee at 7-Eleven. Text SIXFLAGS to 711711 and they will reply with a link that you can open from your phone for a free Slurpee (expires 12/31).
If its your first time doing text offers from 7-Eleven you will receive a text then reply Y and then you’ll get another text with a link to the coupon (so you’ll need a smart phone), and only click “Redeem Offer” when you are ready to use it, as its only valid for 15 minutes after that.