Promotional value expires Sep 19, 2016. This is not your ticket. Follow redemption instructions at sixflags.com/groupon before marking voucher as redeemed on Groupon app/site. Limit 10/person. Redeemable only for admission until 9/18/16. Refundable only on day of purchase through Groupon. Merchant is the issuer of tickets. Valid for ages 3+. Height/physical restrictions may apply on some rides. Excludes separately ticketed/special events or park buyouts. Admission subject to park's occupancy limits. Not valid in combo with any other offers. Some attractions require extra fee. Ticket valid for admission only at Six Flags Discovery Kingdom in Vallejo; not valid at any other Six Flags theme park. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Offer is not eligible for our promo codes or other discounts. Learn about Strike-Through Pricing and Savings