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 Can I pre-book my visit to any of the Blackpool attractions? Do I get any perks as a Merlin Annual Pass holder, when visiting Madame Tussauds Blackpool? Where do I go to gain entry with my Merlin Annual Pass? How long will my visit take? What drinks are available in the Rover's Return bar?