Hi Emilia!
Welcome back! You are quite the Disney vacation planner and we can all relate to that here at the Disney Parks Moms Panel. Thank you for your great questions, they are fabulous!
You are able to purchase items online and may enter the shipping address as the resort you will be staying in during your trip. Unfortunately, the package will not be waiting in your room when you arrive, but Bell Services will be happy to bring it to you. You may also order beautiful items from
Disney Floral & Gifts. I always use them to plan a little surprise for my family on a special night, or shortly after we arrive!
As for the Cheshire Cat Ears, I would definitely look in one of my favorite stores, The Chapeau, right on Main Street, U.S.A.
I hope this helps you in planning your magical adventure, Emilia! Please let us know if there is anything else we may assist you with.
Pixie Dust,
Lauren