Do I need to book a time slot with my Merlin Annual Pass? No. You just arrive at the Madame Tussauds admissions entrance and show your Merlin Annual Pass. Related articles What attractions are included in the Merlin Annual Pass? I'm an Annual Pass Holder. Do I need to book? Do I get any perks when visiting Madame Tussauds Las Vegas? How much are tickets to Madame Tussauds Las Vegas?