Yup - if you are staying onsite they give you a "Key to the World" card - it's your room key, park entry ticket AND you can opt to put charging priveledges on it, you can also limit how much per Key. So say you have teens, with their own Key, they can charge up to $25 per day, or whatever amount, on their card... It's nice not having to carry cash - and the Key is accepted everywhere Disney as far as I know.