You can select your "Arrival Appointment" by logging in to your Cruise Manager beginning at midnight Eastern time 90 days prior to your sail date. Your arrival appointment is a half hour window for you to arrive and check in. If you arrive earlier or later than this period you might have to wait to board or might be able to board immediately. Arrival appointments are staggered so that not everyone tries to board a the same time, and the earlier ones tend to fill up quickly. Priority boarding is reserved for wedding parties, platinum and diamond guests, suiteholders and those who purchase Faster To The Fun.