How do I book a time slot with my Merlin Pass? Please note: All guests, including Merlin Pass holders, must pre-book online in advance. Please click here and scroll down to "Annual Passholders" to make your reservation. Related articles Covid-19 – Information for Guests What if I'm running late for my time slot? How do I purchase friends and family tickets for SEA LIFE Blackpool? Am I entitled to a free carer ticket? I may have two bookings, what do I do?