I'm a Merlin Passholder, do I need to pre-book entry? All Merlin Passholders must reserve their entry in advance. To book your tickets, please book here by scrolling down to the "Merlin Annual Pass - Prebook Entry" reservation option, Related articles Will I have to queue to get into The Blackpool Tower Dungeon? Why am I booking into a time slot? How do I contact your Customer Services team? Do you offer Combination Tickets with other Blackpool Attractions? What is the Drop Dead: Drop Ride to Doom?