I just checked out of Poly and I had 5 employees helping me for 3 days trying to get the apple pay to work. Finally heard back from Disney IT that it does NOT work at the parks and that they will be doing an update to their system. The Poly employee said it may be 2 weeks or more. We go back in December, so I hope it is working then. I also tried several stores at WDW to see if it would work, but no success. I was successful using it at the
Disney Store in Texas... apparently the WDW systems and Disney Store sytems are not linked in any way.