It's a common question, EMH has replaced e-ride nights. Anyone staying in a Disney property is eligible, and it does not cost anything extra. Mornings are for 1 extra hour, and evenings are 3 extra hours. For evening, you have to bring your card, and they will swipe it, and then give you a bracelet. You must show the bracelet to ride any attractions. The EMH nights rotate through the parks, you can see the schedule on disney.com, allearsnet.com, etc.