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 The Blackpool Tower Dungeon? Where do I go to gain entry with my Merlin Annual Pass? Are there any restrictions for the Drop Dead Ride? Is The Blackpool Tower Dungeon wheelchair accessible? When is the Blackpool Tower Open?