I don't get that at all from: Around 9:00 AM, the theme park will open to Guests with regular Magic Kingdom admission tickets and event-only attraction access will end.
To me, the information on the website is saying that around 9:00, for purposes of attraction access, you turn back into a pumpkin and from that point forward, you are to be treated as a "regular" guest. Since FPs are available starting at 9:00, you either have one or you don't. And if you don't, then you stay out of the FP line. The FP system is designed to dole out a specific number of FPs in each time slot so as no to overload the boarding area at any one time. The people who went on line 60 (or 30) days in advance to get their FPs for the Mine Train did so with the expectation that there would be a certain number of people getting them at that time, and the computer that assigned those FPs did so with the calculation that it created the proper number of arriving guests for that time slot. All of that gets thrown out the window if hundreds more people without FPs clog up the FP line at 9:15. It would have been very easy for the information on the website to say that around 9:00, exclusive access to the FP line will end and guests with wristbands must share the FP line with guests with regular MK admission tickets. But it does not say that. The wording, coupled with the way FP is supposed to work, cut against the argument that FP access until 10:00 is being advertised. 58 days ago, somebody got shut out of a FP for the Mine Train between 9:00 and 10:00 because the system reached capacity. It isn't fair to the people who got shut out, (and it isn't fair to the people who succeeded) if hundreds more people can use the FP line after their hour and fifteen minutes of exclusive ride access ends. And besides, after riding the ride between 4 and 17 times between 7:45 and 9:00, does anyone really need to go through the FP line to do it again?