When does my Merlin Membership end? That's up to you. You may cancel your Membership anytime after the first 12 months. Related articles What happens after the first 12 month commitment for a Merlin Membership? How do I cancel my Merlin Membership? As a Merlin Membership Passholder, how do I get discounts in Restaurants and Shops? Can I add another family member after I have already purchased a Merlin Membership? I've not received my Membership within 3-5 days, what should I do?