No pixie dust here. I have a DVC guaranteed week reservation at the Riviera in October, and as a special birthday present, my wife is taking me to Galactic Starcruiser immediately before our Riviera stay. Both reservations are properly linked into my
MDE. When I go online to try to buy
MNSSHP tickets, the only date that it shows is during my Galactic Starcruiser reservation. It doesn't even give me the option of selecting any dates during our Riviera reservation. It is as if it finds the first reservation during the MNSSHP season, and will not include any dates for any other reservations you have during MNSSHP.
I tried calling the general ticketing number, and after a long time on hold, I spoke to a CM, and they transferred me to the DVC line. It said that the estimated wait was about an hour. After 10 minutes on hold there, I hung up. Maybe Disney needs to offer Lightning Lanes for phone calls.