My concern now is that the economy is so bad. Sales staff is being reduced and if sales continue to falter (as you would expect in a bad economy with a luxury purchase), I could see developers slowing down the construction. I'd be very nervous about a 1 year anticipated opening getting stretched out to 3 years. And they would expect you to keep paying during that period.
For NY residents at least, there is another interesting twist: since NY law requires a CO before closing, NY residents can purchase at pre-construction prices but don't actually pay until the resort is open. If I am not mistaken, however, they can pay the MF's for points in the interim.