No. Fireworks are not visible from the room balconies in any courtyard view. Maybe the one or two rooms out on the end of the south wing could, but that would be iffy. To the best of my knowledge, only Woods view room in the North Wing have any chance of seein MK of fireworks, and that is dependant on what floor you are on and how the trees lie up .
On our recent trip we watched them from the boat dock. Very pleasant. As noted earlier, the electric parade is clearly visible as it passes on Bay Lake. We sipped our drinks on the balcony two evening, while it passed.
Z