You can check in early without any problem. Whether your room will be available to you is a different story. Sometimes our room has been ready as early as noon, other times not until after 4:00 PM. We often check in by 10:00 AM and our room is seldom ready that early in the day. We know that ahead of time, but want the room keys and parking pass so that we can head to the parks. When you return, you can check at the front desk for your actual room number (or you can call anywhere on property and ask for the room number). As mentioned, bell hop will store your luggage if you don't have a rental car.