AP just has a different bucket - I have seen often where it has availability and regular ticket and Resort do not. October 1 is a special case. I’ve been tracking, and even if a day is booked, you can almost always get at least one park the night before, the park Reservations have been pretty much always available other than long weekends. I did a resort stay prior to thanksgiving last year, and for one of our days, we reserved DHS via the AP bucket, because the resort bucket had no availability.