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 as a Merlin Annual Pass holder, when visiting Madame Tussauds Blackpool? Can I pre-book my visit to any of the Blackpool attractions? Where do I go to gain entry with my Merlin Annual Pass? How long will my visit take? How do I purchase friends and family tickets for Madame Tussauds Blackpool?