I got the dreaded 3am email about 2 weeks ago. I had 2 day base tickets and party ticket, with our party day being in the middle of our 2 regular park days. My party FP+ selections were between 3:30-6. The bad thing was that it ended up cancelling my FP for my last day, which happened to be AK so we lost our FOP

. I called in and the CM I talked to said that nothing should have been cancelled because the FP's I made for
MVMCP were between the 4-6 window....I told her I assumed this happened because I shouldn't have been able to make FP for a party ticket only day (she said that was not the case and as long as they were in that 4-6 window it was okay). Since we had lost our FOP and obviously there were no more available to book (so glad they now can track this kind of thing) she was able to get in touch with IT and they gave us an anytime FP specifically for FOP on our last park day (which was totally awesome of them to do for us). Anyways just wanted to share my experience and what I was told.