That is limiting your room to just a few and honestly since the BCV is always at 100% occupancy, the chance of one of those rooms on the fifth floor being vacated on the day you check in is slim. If the fifth floor is the most important thing to you, I'd probably take off the Epcot view part of it. Otherwise, they might try to get you that view and if the fifth floor room with that view isn't available, they could put you in one on the third floor. You have a much better chance of getting your request met if you were just to make one request (like fifth floor). And of course, there's no guarantee for that either unfortunately. Are you checking in early? Although the room may not be ready before 4 PM, if you check in early and ask the CM when you check in "Is the room on the fifth floor" and if they say "no", then you can tell them you really would like a fifth floor room and you don't care if you have to wait until check-in time for it. If you get there early, there is a better chance they can move you to another room. If you get there late and everybody else has checked in, there might not be a room to change you into.