We got a studio for a couple of nights this May following the WBPC cruise. It was my first experience using the online system and right at 8:00 eastern, at the seven month window, they had good availability for everything but the grand villas. The best thing you can do is be online right when the window opens and also have a backup plan, different dates or unit size. Our dates were fixed so I was prepared to go up to a one bedroom if the studio was not available and also prepared to use points just for a hotel room if there were no studios or one bedrooms available.