Hi, Zachary!
Disney STORE Gift Cards are good only at Disney Stores (at your local mall) or Disney Store online. You will want to purchase/use the
Disney Gift Card for use within Walt Disney World.
Visit
www.disneygiftcard.com to see where you can purchase the gift cards and how and where they can be used.
If you are not sure which card you have, the Disney Gift Card that is good in the parks specifically says "Redeemable .... at locations including Walt Disney World, Disneyland, Disney Cruise Line, Disney Store...." etc. If you are still unsure, call the "1-800" number on the back of your card to clarify.
Plan to use your Disney "
Store" gift card ahead of time at your local Disney Store to pick-up plenty of Mickey merchandise for your Disney vacation!