I've gotten a room about 8:30am a couple of times at OKW, but I've also had to wait past 4:30 a couple of times, too. It all just depends upon what guests are leaving and when, how many rooms they have to clean, and what time every new guest arrives as to what will be available when you get there. Are you driving or flying? If flying and using Magical Express, they do notify the resort of your arrival when they scan your ME ticket to board the bus and they try to put those guests into rooms that are ready. Not always possible, but they do try.