Finally, where could Disney build this resort? Keeping in mind that zoning and conservation laws tend have become much more stringent since the days that Walt built his resorts and that conservationist concerns ultimately killed his Mineral King Ski Resort, the easiest way that the Disney company in the 21st century could avoid these barriers is simply to buy an existing ski resort (hey Bob, we have two resorts up here in Vermont that are in receivership and could be purchased for pennies on the dollar....). I'm going to limit the possibilities to North America, because I don't know Asia well enough and the sort of resort I described wouldn't work in Europe.
Because our resort will be so reliant on an extended winter season but have an adequate water supply for the water park and all the pools, it would need to be built in a location that has: 1) Large Mountains 2) Long, cold winters 3) Ample water supply. Being not too far from a large population center with good transport connections would also be a plus, mainly for the support logistics the resort would require.
We also would need to consider the unfortunate fact that the climate is warming, and given that some southerly locations that currently support high altitude ski resorts might not be skiable anymore in 50 years, our Disney resort should aim for a northern location that will still likely be cold enough in the decades to come.