Yes, the wings do not have balconies on the 2nd and 3rd floors. And yes, you can open up the sliding door. But the first floor rooms are not deluxe rooms.
A deluxe room (which I just booked for September by the way) is an oddly shaped room at the part of the wing where it bends. Since the North Wing was knocked down, they only have 3 now. They are rooms 5109, 5209, and 5309. It has an oversized bathroom with a bathtub and standup shower. It also has a sitting area with 2 couches and a coffee table. There is also two sliding glass doors. And each room comes with a huge, king sized bed.
Hope this helps!
Pete