You should definitely make your reservations online at 6am. The phone lines don't open until 7am EST. This gives you a one hour head start from anyone who is waiting to call for reservations. We booked all of our reservations online at our 180 mark for our upcoming trip in November and we got everything that we wanted (Le Cellier, Cinderella's Royal Table, 'Ohana, etc.) and we also got the times we wanted as well. Good luck!