you can start making your ADR's 180 days before our vacation! so, start counting down, and book as soon as possible! as for me, my vacation is 138 days away, and i LITERALLY just got off the phone from booking my ADR's, and i had no problems.. for higher interest restaurants, you might want to stick to 180 days before, though! i only booked us one character meal, and had no troubles! good luck!!