It's late and I'm tired so maybe I've missed something(forgive me if I have..

). It looks as though you'll be staying in a Disney resort. If that's the case you'll have your "Keys to the World" card. This card will be used for getting into your room and also has your DP credits info if you're on the DP. Also, you can use those cards to charge stuff to your room. They'll have your credit or debit card on file and you'll have a limit(I think it varies depending on the type of resort you're at...the limit is more for deluxe, less for value??). You can carry this card and use it almost everywhere instead of your credit or debit card. At the end of your stay they'll charge it all to the number on file. I love this! Of course, you can still use your credit/debit cards when you want or instead of, but it's nice to have this little perk!
Have a good trip!