I have a Cadbury Free Ticket voucher do I need to pre-book? Pre-booking is essential therefore we require all guests to pre-book their tickets to guarantee entry. You can pre-book your ticket through this link. Related articles Do I need to pre-book online in advance with my promotional voucher? Can I contact you via Live Chat? I have a Kellogg’s snack pack voucher (e.g Fruit Winders, Rice Krispie Squares), how do I pre-book my ticket? I have a promotional voucher not listed on the website, do I need to pre-book? Is my Promotional Voucher valid?