I was wondering too if this was some kind of strange test. Doing the math, MK had a capacity of about 92,000 before the new Fantasyland, and isn't it over 100,000 (seems like 112,000 is in the back of my mind somewhere) since the new Fantasyland opened? It would seem like the number of phone calls which would have to be made to actually make a difference in the feel of the crowd level would be huge if it really has anything to do with staffing inside the park- for the staffing to make that number of phone calls (assuming each one takes 3 minutes, that would be 20 an hour per person), might as well staff the park. Could be it is not a test and that they are trying to keep it to a capacity crowd to avoid having to turn people away with FP+, or as they seem to be calling people with later FP+, maybe they are just calling people that have FP+ booked that they think are likely to show up at a time that they will be turned away from MK based on capacity and they really are trying to do something nice for the customer- I would like to think that it is case, but with all the recent changes at WDW and DL that take things away from the customer unfortunately, I am finding that a little harder to believe at this point in time. Now, 5 years ago maybe I would have been more inclined to believe that one.