How do I book a time slot with my Merlin Annual Pass? You do not need to book a time slot with a Merlin Annual Pass, simply turn up and join the priority queue. Related articles Do I get any perks when visiting SEA LIFE Blackpool, with my Annual Pass? Where do I go to gain entry with my Merlin Annual Pass? How do I purchase friends and family tickets for SEA LIFE Blackpool? What if I'm running late for my time slot?