Two ways to redeem this offer: 1.) For guaranteed entry, book online. 2.) Walk-Up & present coupon at admissions desk while tickets are available. Valid for up to 3 free child tickets with the purchase of 3 adult tickets. Online reservations strongly encouraged. Copies are not accepted. Coupons may not be combined with any other offer. Not valid with any other coupon. Must present coupon at time of order. Must present coupon at time of purchase. Coupon void if altered. Expires Mon Apr 30 00:00:00 EDT 2018.