For Walt Disney World:
180 days - Advanced Dining Reservations become available. For guests of the Walt Disney World resorts, this is 180+10 days (this allows you to make reservations for up to 10 days into your stay. 60 days - FastPass+ selections become available for guests of the Walt Disney World resorts.  Online check-in is open. 30 days - FastPass+ selections become available for non-guests of the Walt Disney World resorts. Vacation packages (basically excludes Room-Only reservations) must be paid in full. MagicBands should be customized in My Disney Experience by this point.  10 days - MagicBands can be customized up until this point for reservations made less than 30 days to arrival.
For Disneyland:
60 days - Dining Reservations become available. Note: Disneyland does not have advanced FastPass+ planning like Walt Disney World, they have MaxPass+.
For Disney Cruise Line:
120 days - Platinum Castaway Cay Members can book Port Adventures, Adult Dining, Spa experiences, and Kids Clubs. 105 days - Gold Castaway Cay Members can book Port Adventures, Adult Dining, Spa experiences, and Kids Clubs. 90 days - Silver Castaway Cay Members can book Port Adventures, Adult Dining, Spa experiences, and Kids Clubs. 75 days - First time Disney cruisers can book Port Adventures, Adult Dining, Spa experiences, and Kids Clubs. Note: The balance due date as well as the corresponding cruise cancellation fees, ranging from loss of the deposit per guest through 50%, 75% or 100% of the vacation price per guest, vary depending on the length of cruise (1-5 nights, 6-9 nights, or 10+ nights), whether it embarks/debarks in the United States, whether it is a "holiday" sailing, and whether it is a suite or concierge stateroom. For details on balance due dates and cancellation fees for your sailing, view your Disney Cruise Line Terms and Conditions in your confirmation email or ask me.