Just booked Qsuites on the AMS-DOH and DOH-BKK routes for late Dec 2021. My understanding is the A, B J and K rows are generally reserved for single passengers, with the suites themselves reserved as quads or doubles for groups of 2/3/4. EF is showing that all of the quads are blocked off (blocked, not booked) except for 5E/F on the AMS-DOH leg, and all blocked off on the second leg. When I called to snag the 5E/F, QR tells me that they're not available (EF error?).

Do these blocks typically fall off a certain T- period closer to the flight date, is it totally YMMV? I imagine they're blocked in case groups of 3/4 book?