we are told at reservations now that you cannot pick up the tickets prior to the start of the package.. I have even confirmed this when I go to resorts cause for my own knowledge and to pass along to guests, they said they cannot do it cause they are unable to cut the keys early with the tickets & dining.
There have been plenty of times when I have had to call resorts with the same front desk numbers I give desks and always get a cast member working at that exact resort, so I don't know where this Disney Resort Call Center is but I'd love to visit!
The only call center for us is for Disney Reservations... as far as I know the resort numbers are for those specific resorts on property.