It depends. Do you plan to go to a park every day? Have you been there before? If not, you should know that it can be exhausting, after two full days at the parks (Magic Kingdom and Epcot), we were dragging and had to take a break...we spent that day around the resort. Then went back at it on day 4. Your UHP lets you go every day to the theme parks, water parks and I think Disney Quest and Pleasure Island. A park hopper just lets you go to the theme parks (but you can hop between parks on the same day...a single day ticket only lets you go to a single park). A park hopper plus would let you go to the theme parks (on the park hopper part), and the water parks and Pleasure Island on the "plus" options. If you go to a theme park on the same day as PI or a water park, you will burn a day on the pass AND a plus option. But, if you don't use all the days on your PH or PHP, you can save it for another trip (they don't ever expire). With an UPH, you are paying for full access for everyday, and if you don't use it everyday, it can be more expensive....also, the UPH is good only for your length of stay. If you are worn out and take more days off than you planned, or if you get sick, you are still paying for access on your full trip. You just have to figure out what you plan to do (theme parks only?, Pleasure Island? water parks? DisneyQuest?) and then compare the cost of the UPH to what a park hopper or park hopper plus would cost you.