Randymon posted about a week ago that this is probably only a temporary measure during the off-season. I remember that they did this a year or two ago, too. So I would expect that they will require reservations until December when the occupancy rates start picking up.
We were at CSA from 8/15/10 to 8/23/10. Reservations for Patois were not necessary during our stay, however we got a note in a our room that they would be required beginning 8/25 (I think...we were leaving, so didn't pay much attention to exact date). And BobandJudy are correct, Randy posted this would be a temporary measure during the low occupancy period.