Excellent question. The Park Hopper option is only for the 4 theme parks and does not include the water parks or DisneyQuest. If you wish to visit those parks, you can either purchase single admission to each or you can get the Water Park, Fun & More option. This gives you one entrance to a water park, DisneyQuest, and other great places around Disney World for each day of your ticket. So a 6 day ticket will give each person 6 entrances. You are not restricted to use one each day. For instance, if you want to go to a water park in the morning and DisneyQuest in the evening, that would cost you 2 entrances.