So this is a weird setup and I don't think it applies to any other
DVC resort, but there are certain amenities like the pool and fitness center that will be shared with guests across the Polynesian resort (not just DVC). I'm not sure how that works financially or how the upkeep of these facilities will be shared between DVC/DVD and Disney.
I certainly would be upset if DVC members were on the hook to pay for the maintenance on these areas with annual dues when non-DVC members get to use them.
BTW, I'm so glad the portal mystery is resolved. I think that took up at least 20-30 pages on this thread.