Where can I buy a Merlin Annual Pass? All 30+ Merlin US attractions sell the Merlin Annual Pass locally. Buy in person at your nearest attraction Buy Online - save time and get a free ticket to bring one of your friends or family. Related articles Can I purchase a Merlin Annual Pass from SEA LIFE Grapevine Aquarium? Do you offer a family discount for a SEA LIFE Grapevine Aquarium Annual Pass?