When I made my ressie at the gov't rate of $129 I asked for "best view available."
At check-in I asked to use my SPG points to upgrade to a balcony. The desk clerk said he could do this, but the only balcony rooms available did not have the greatest view...he suggested that I go look at my room and assess the view, then come back for the upgrade if I still wanted it.
We had room 19101 with the most fantastic view of both EPCOT and MGM. No way was I giving that up!
Anyway, the point of my story is that the Dolphin is great, the staff were extremely helpful, and always ask.