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 Where do I go to gain entry with my Merlin Annual Pass? Do I get any perks when visiting The Blackpool Tower Dungeon with my Merlin Annual Pass? Will I have to queue to get into The Blackpool Tower Dungeon? How do I contact your Customer Services team? Why am I booking into a time slot?