How do I book a time slot with my Merlin Annual or Merlin Membership Pass? Please book your time slot reservation via the Pre-book Portal. You can find further information here. Related articles Free carer ticket bookings What do I need to bring for my free carer ticket? I have made a booking but have not received my tickets Are there any restrictions for using my Merlin Pass at SEA LIFE Brighton? How do I purchase Merlin Pass Friends and Family tickets?