Having witnessed changes to
DVC member booking patterns for 20 years now, the simplest answer to this is: aren't we already at a point where people book as early as possible??
The rate of resales is pretty low..less than 1.5% of all points each year across all resorts. Saratoga Springs (which coincidentally is about 20 years old) had about 1.3% of its points change hands via private transaction in 2021 and 0.9% in 2022.
That's for a relatively mature resort. Riviera resales accounted for only about 22k points COMBINED in 2021-2022. That's less than .5% of Riviera's 4.4 million declared points being re-sold over the span of 2 years.
And these raw transaction numbers cannot account for points which are sold multiple times. Even *IF* a resort averaged 1% of its points resold each year, that doesn't mean 10% of the points are resales after 10 years because some contracts are bound to change hands more than once.
Throw all these factors together and I'd be shocked if Riviera was more than 15% resale when it hits 20 years old. (Perhaps far less than that since it's only averaging .25% each of the last 2 years. The mere existence of the resale restrictions--and potential financial loss--may make owners less inclined to sell.)
Nobody will ever be completely "shut out" because there's room for everyone to use their points. That's the point of a timeshare. And the vast majority of owners will have full direct purchase rights for many years to come.
Members' booking aggressiveness has long varied from one resort to the next. Owners of BCV, BWV and VGC should have very different expectations for booking their Home resort than owners of SSR or OKW. Perhaps the simplest conclusion to draw is that Riviera will be more like BWV than SSR. Doom and gloom predictions of people not being able to get into Riviera inside of the 11 month window are pretty extreme, IMO.