John,
I am a owner at MFC as well and I don't know what it specifically means either, but I do know that your deed will be for a specific unit for a specific week because that is the only way they can assign it on a deed. I think all other properties (for the most part) work the same way with deeded ownership. Your usage rights, however, depend on your season, # of bedrooms, and view - the view would also be specified in the deed. Since all MFC units have the same view, that won't really matter unless you are trading somewhere else. Most importantly you are not restricted to that one unit or week.
I am sure someone else knows the breakdown of the code, but I think you are mostly right. I am thinking the UV mean ocean front.
Chuck