Hi Debbie,
Guests are welcome to ship packages to be waiting upon their arrival. I do this almost every time I stay at a Disney Resort. Its one less thing for me to have to remember to pack and risk sending my luggage into the excessive weight category when I fly down.
Here is how you should address the package:
Disney's All-Star Movies Resort
1901 West Buena Vista Drive
Lake Buena Vista, FL 32830
Please hold for Guest (your name here)
Guest Arriving on (arrival date here)
If I am checking in on a Friday, I usually ship my package on Monday just to be sure it is enough time to arrive before I do. When you check in, mention that you should have a package - they usually have it waiting at Check-In for you. If not, they will deliver it to your room shortly. Make sure you carry enough diapers with you to make sure you're covered in case you have to wait for a little while for the package to be delivered to your room.
Please let us know if you have any other questions during your planning. We're super excited to assist you. Wishing you many magical memories :-) Allison