Since BLT is a DVC property the owners at BLT can start booking rooms 11 months out from the beginning of their reservation (e.g. a reservation starting Dec 1 2021 can be booked on Jan 1 2021). DVC owners at other properties can book there 7 months out. I do not know how they allot cash rooms but my guess is it would be after the initial rush of BLT owner bookings in the 11 month window.