Do Merlin Annual Passholders need to pre-book entry? We recommended pre-booking at thorpepark.com to guarantee entry. Check restriction dates here: https://www.merlinannualpass.co.uk/important-information/terms-conditions/restriction-dates/ Related articles Do Thorpe Park Annual Passholders need to pre-book entry? I have a Cadbury's free ticket voucher, how do I pre-book? How can I contact you? How do I purchase Merlin Pass Friends and Family tickets? I thought the summer pre-book tickets were being released in May, why are they being released now?