The Power Pass is the base annual pass that would include park admission. It does not allow for free parking or any discounts at the park or resorts. It also has blackout dates during busy travel seasons like summer, Christmas week and Spring Break. People who have the Power Pass are sometimes left out from attending passholder previews of new attractions. Your best bet would be to get the Preferred AP which includes park admission, free parking and discounts at the parks and resorts.