From Disney's Excursion Letter
Excursion reservations can be made up to 60 days prior to sailing and are taken on a first-come, first-serve basis.
Just complete the Shore Excursion Request Form (you should receive it after final payment) and fax it back to 407-556-7031 or contact our Special Services Desk at 1-877-566-0968. A Special Services representative will confirm availabilty and participants for each excursions selected, and mail or fax back your confirmation document.
You can make additional requests or alterations up to 2 days prior to sailing. After that, new requests, refunds and changes to reservations can no longer be accomodated.
Your excursion tickets will be delivered to your stateroom on embarkation day
Denae