If you are staying on property (which you are) you can call 90 days before your check-in date and make all of your reservations through day 10 (if you'll be there that long). Some restaurants that are not owned by Disney (Rainforest, some DtD restaurants) require that you call 90 days in advance of the day you want to eat there. If you are there longer than 10 days, you will have to call 90 days in advance of each reservation day after the first 10 days.