Good grief, another set of rules for SVR properties...
The key word in your post is "properties." Each phase of the SVR properties is governed by a separate declaration. Each declaration can (and apparently does) say separate things about how a true fixed or fixed float week is treated for reservation purposes.
Vistana created this problem when SVR was created. The provisions of the separate declarations are now as binding on Starwood as they are on the owners of the weeks at the various resorts. The provisions can only be changed now by the requisite vote of the owners, not by the boards of the various associations. And, certainly not by Starwood.
So, everyone is stuck with a crazy-quilt mess of what can and cannot be done under the provisions of the various declarations.
I do not own at any phase of SVR. So, I do not know what the declaration of any phase says about reserving fixed or fixed float weeks. And, I cannot say with certainty what the declarations of condominium provide for any phase of SVR. However, extrapolating how things are done at Lakes from how they are done at other phases/associations is folly - unless the provisions of the associations are identical. I seems they may not be identical. ... eom