If you have a 7-Eleven location near you, check out this offer!
Get a free Medium Slurpee. Just text the word sixflags to 711711 and they will send you a link to a free coupon! Make sure not to click the link until you are in store.
Valid until 12/31/16.
Don’t forget you can also download the 7-Eleven app for Android and iOS (click this link, create an account and get free stuff, coupons, and other deals.