About storing your luggage until check-in time: check with your hotel. Most upscale hotels will hold your luggage for you until you return after check-in time. If your room is already clean and available, some will let you check in early. This means stopping at your hotel before the convention center, but you won't be lugging around that extra suitcase you brought for all your goodies. If you're with Celebration housing, I would be completely surprised if the hotels on that list did not provide this service, especially for what they're charging.