If you called, you can can cancel them online as long as you have the confirmnation number and the phone number you gave. I checked that out this morning and you can do it. You can also cancel online ADRs the same way. To cancel ADRs put your mouse over my disney vacation (the little suitcase icon) and go to the bottom of the list where it says dining reservations. Click on that and the boxes to enter the confirmation and phone #s are at the top of the page.