Disney's dining system is based on Advance Dining Reservations (ADRs). The window for ADRs opens 180 days prior to the beginning of your trip, so if you're going this spring or summer, you may have a hard time getting into the most popular meals (Cinderella's Royal Table, Be Our Guest Restaurant, Akershus breakfast with the princesses), but there's still plenty to eat there even if you can't get ADRs. — Quora user Michael Lee