we just dropped off a box to be shipped to the Poly yesterday.

We packed up diapers, wipes, sunscreen, our ponchos, some toiletries and a few toys and some nonperishable snacks (cereal bars, pop tarts, fruit snacks etc). The box was like 18" long, 12" wide and 10" high and fit everything perfectly. It cost around $8.00 to ship down there.
Call your resort ahead of time and find out how they would like for you to address the package. Mine was addressed something like
HOLD FOR GUEST Lollipop Mom
Disney's Polynesian Resort
Poly Address
Orlando, FL
and then had "guest Lollipop Mom arriving 10/14" and my confirmation # written in the corner.
The CM at the Poly recommended that I either use a product box or let my kids decorate the box. She said that she recommended that so that when I check in I can say "we shipped a package ahead and need to pick it up. It's the Sony TV box - or - it's the box with the child's drawing of the castle on it." That hopefully that will make it easy to spot and get to us quickly.

I packed everything up and printed out a FedEx Ground label online then let my kids put Mickey stickers all over it. I just taped over several of them with clear tape to make sure they don't come off.
