Yes you can get UPH, but why not go for a cheaper alternative? Are you sure getting AP's for everyone isn't a good idea? Also, depending on how much you plan on waterparking you could even go for a premium annual pass (includes water parks or DQ) or you could just buy the tickets when you go there. 12-day UPH prices aren't posted, but 11-day UPH are $461.15 Adults (10 and older); $369.56 Children (3-9) when purchased in advance. I'm guessing 12-days will be 30 dollars more. An annual pass (parks only, no water parks or DQ) is $403.64 Adults (10 and older); $342.93 Children (3-9). A premium annual pass is $531.46 Adults (10 and older); $451.58 Children (3-9). My guess would be unless you plan on going back within a year, to get APs, and then buy day passes to waterparks ($33.02 Adults (10 and older); $26.63 Children (3-9)) but that depends on how much you plan on going to waterparks, or Disney Quest ( same price as water parks). You might also look into 30 day fun in the sun passes or 10 -day World Ticket, which are good for longer trips. These are more difficult to find in the US, though. Check out mousesavers.com and click on walt disney world, then tickets and passes for helpful information about discounts and tickets.