I booked a stay for the St. Regis Maldives for next fall two weeks ago. The required points with only 440,000 for five nights at the time. I used points advance to reserve because I a 100K points short at the time. However, I looked at my reservation again this week. Magically, it increased to 1,7250,000 points required. I called support and emailed the hotel. There was nothing they could do as the system did not send me any confirmation email at the time. I was however able to find availability yesterday for 540,000 points for the same time period and "updated" my reservation to that points value, still using points advance. I'm just hoping that my reservation doesn't change again before I accumulate the required points.