From what I've heard you picked a great time to go. Crowds should be very low at this time. Which should give you a better chance at having your room requests granted.
We stayed at the BWI and had a standard room booked. 4 days before our trip I faxed a room request stating it was important to us to have a non smoking room with 2 beds, a daybed, and full balcony, as well as a veiw of the fireworks. We got a great room with our our requests met. Our balcony looked right at the Eifel tower and you could here the music from Illuminations. Keep in mind you will not be able to see the lower part of the show from the resort, but you can see the higher fireworks. When we made the ressie we also stated the above requests.
Good luck!