That's awful! I wonder if the FP+ on the party day before 4pm was the trigger? I saw somewhere someone posted an email from a CM (I can't remember where I saw it though) that seemed to indicate that FP+ before 4pm were the issue. I had originally made my party FP+ starting at 3:20 and then cancelled the first one a few hours later when I saw that note, leaving only 2 FP+ on my
MVMCP night (4:20-5:20 and 5:20-6). I booked mine on Tuesday (we're going to the same party you are), and knock on wood, haven't gotten the dreaded email yet.