Who buys now, before resort opens, get current UY point and next year points to use. Almost everyone (except who really wants a Feb UY) has double points to book a vacation and many are trying to use them as soon as possible. This reduces availability.
Going forward someone will have double points, somone else not, some will use the points immediately using a welcome home reservation in the short term. More declarations will be done opening more availability.
All this to say I think availability at 7 months should improve for late 2020 and 2021. Long term availability is more difficult to predict, but I expect for Riviera preferred it'll be better than BWV garden and Riviera standard better than BWV standard. Tower studio on par with BWV standard.