As PP mentioned, they can hold your luggage up front if needed till your new room is ready, while you head to the park. When you go to the desk the next morning, you can check out and check in for your package, and your tickets and dining will then be available. Remind them that you would like to stay in the same room, and if for some reason they cannot do it, then you can ask them about the luggage. They can tell you if it is an option for you to leave it in the room and have them move it, or bring it up front on the way to the bus( they can also send someone to your room with a cart to load it, and they will tag everything for you). But it will not affect your plans for the day - you can still go to the parks and use your dining plan as planned. You might want to have what you need for the first day primarily in your carry-ons, which we usually do anyway, so you don't have much to repack in the morning. And just head down early enough to give yourself extra time for whatever you need to do before you head out for your first day.