Per the II demand chart, demand drops after week 14 and again at week 17, so 15,16 are in between. I can't comment on the $6k figure, but what works for a lot of people is own the week and the unit that you want. The MFs at $1,000+ per week play a bigger roll than the upfront resale price. We own there and love it, others would love to be able to dump theirs.
Week 45 has a lower demand index than your 15/16. Nine steps lower on a scale of 20. Also to note week 40 is when it is closed for maintenance all week. That is the off season. Also what floor the units are on make a difference in their value.
Super ! Happy vacationing. We go pretty soon ourselves, but down to the Haciendas this year.
We picked out the 6th floor ourselves from all of them (we bought from the developer). Not ocean front though, phase II. Great spot.