KTTW = Key To The World Card. It is an all in one card that looks like a credit card. You get this when you check into a Disney hotel. This card provides access to your hotel room, has your park tickets on it (if you bought a package through Disney), has your dining plan points on it (again if you bought a package through Disney), and can have charging privileges on it as well (if you provided a credit card when you checked into your Disney hotel.