Talked to a trio of suits out near the tram area tonight. They said that Pumbaa would be opening at midnight and that there was NO overnight parking in Mickey and Friends, and also that they "would be watching that structure very closely". This, to me, means more than just they don't want us parking there. I'm guessing they're going to be heavy on the security, given recent events, so I believe them about the not allowing it.
So for those of us doing the midnight Happy Birthday then getting in line for DCA, since DCA probably won't open till 2 or 3, it may be best to make your car-moving plans ahead of time. Try to get someone from your group to move the car, and hold their place (I guess at that hour, with DCA not open yet, it should be okay).