I always bring my confirmation paperwork with me, but I have never needed it. The information in the hotel computer has always been correct. Check in is quick and easy. They will give you your Key to the Kingdom card (KKTK) when you check in. This will be your room key, your tickets to the parks, and your dining credits if you are on the
DDP.
You can check in as soon as you arrive at WDW, even if it is early and your room is not ready. You will get your KKTK card and head out to the parks. You can store your luggage and get it later when your room is ready.They will give you a telephone number to call later in the day to find our when your room is ready. On the phone they will tell you your room number, once it is ready and you can head straight there without stopping back at the Registration desk.
It is easy!!!