How far in advance does the calendar of park hours and shows become available. I get to make my ADR on June 15 and I won't know what days Im going to each park to make reservations. Do you thing the calendar will be available by then?
I'd bet the December hours will be out 2 weeks or more before you have to make your reservations. They may change after that (especially for the week between Christmas and New Year's), but there will be a schedule by your ADR time, I think.