Hi Emma!
There is certainly an abundance of shopping available to you while you're visiting the Happiest Place On Earth!
Indeed there are ways you can ship items home rather than having to make room for parcels in your luggage or carry-on bags, especially with today's airline limitations.
A full listing of locations around the property from which you can arrange for your parcels to be sent to your Walt Disney World Resort hotel, as well as being able to ship directly to your home via UPS or FedEx can be viewed on the
Guest Services Page of the WDW website. In addition to these options, you may also choose to visit one of the Business Centers in Disney's resorts which house convention and meeting facilities as they also have courier services available to you.
Shipping prices are based on values of merchandise and/or weights of parcels depending on shipping method, so will vary depending what you've purchased during your stay. Simply advise the Cast Member as you're checking out your purchases, and they'll be able to advise you of the best method available and costs.
Wishing you a simply Magical time on your Walt Disney World vacation Emma!
Kirsten