I am considering buying on the secondary market at Westin St. John Bay Vista. It is listed as a platinum week with a floating designation, though its does have an assigned unit and assigned week (25). It is strange that the assigned week is outside of the Platinum weeks of 51-18. Does that assigned week make sense? Does anyone know if I will still have the same priority in booking a platinum week of my choice as other owners? I understand at Bay Vista I will not be considered a vacation club member and will not be able to use points at other Westin timeshares which I don't mind as I plan using the unit every year. Any other disadvantages to buying on the secondary market?