Success! Got our tickets for August 14th.
After 2 hours of trying to even get on hold on the main number (2 times got on hold; disconnected after a few moments both times)...
Then tried DVC member services right at 9. Got through and was on hold for 23 minutes.
I am a DVC member and an AP holder, and the rep told me that even if I had gotten through the main line, DVC reservations must buy the tickets through member services. Take that with a grain of salt, but it's similar to what other posters have reported. Hopefully they correct this before too long in the day - member services is impossible to get through on a normal day, let alone an event release.
Good luck everyone!