OK I called Disney about this package. It doesn't work for us because it is only for those very specific check-in and check-out dates and cannot be extended to accommodate our travel period. But I was curious about the actual holiday stuff being offered because the descriptions on the website are so vague.
The "exclusive nighttime access to Pandora" is from 9-11pm on Dec. 22. Park hours haven't been extended for this week in December yet (and they surely will be), so I'm personally wondering if those are just EMH that haven't been announced yet, or if it really will only be open to those under this package. I already had AK planned for that day, so I guess we'll see.
The "exclusive holiday character experience" at Hollywood Studios is taking place at the Sunset Showcase (where Club Villain has been) from 9am-3pm on Dec. 23. No further details available.
The "exclusive Christmas Eve dinner celebration" at Epcot will be a buffet with live entertainment. There will be two seatings, 4:30pm and 8pm, but the 4:30 option is already fully booked. She didn't have info about where the actual dinner is taking place, or what kind of food or entertainment will be offered.
The "special holiday gift" will be seasonal items & treats in a Santa bag, delivered to your resort room on Christmas.