We haven't found the commonality yet - so it would be fantastic if you uncover it! I was at home (I live in the Southeast, but not in Florida). I do have a Disney resort/ticket package at Wilderness Lodge/Deluxe resort - and I also already
MVMCP tickets (for a different night than my Epcot day)... also already have my Epcot reservation for the day I booked the CP. So maybe if there are any common threads there for other people who got to book early... I was able to book on both my App and on my computer.