I have a Kellogg’s snack pack voucher (e.g Fruit Winders, Rice Krispie Squares), how do I pre-book my ticket? To pre-book your Grown Ups Go Free ticket (i.e. buy one child ticket get one free adult ticket) click here. To pre-book your Mates Go Free ticket (i.e. buy one adult ticket get one adult ticket) click here. Related articles I have a Kellogg's Cereal pack, how do I pre-book my ticket? I have a promotional voucher, how can I pre-book? I have a Sun 2 4 1 voucher, how do I pre-book? I have a promotional offer, how do I use this online? Is my promotional voucher valid?