I can say my one stay at the Dolphin was not my favorite.
The first three years, I did the land/sea package and you booked it together. A moderate resort got you an inside stateroom on an upper level.
The first year I stayed at CBR. Loved it, but wanted to try something new, so I opted for POR. A few weeks before my trip, my TA received a call that POR was going down for refurbishment and she was on vacation, but another TA (who was a Disney nut) snagged the call and got me a "upper room facing Epcot and the fireworks."
Got there, and the staff gave me my room key, when I got there I was on the 4th floor facing the loading dock. I went back downstairs and they knew nothing about a reservation for an upper room. Nothing was noted, except I had been moved from POR for overbooking. Told me I should be excited to stay at a deluxe resort.
Each morning, I was awake at 7 am to the sound of the trucks exiting and entering the loading dock.
Went downstairs to expect to sit at the bar all evening, and had a fishbowl glass with a three oz. pour and the bill was 9.50. At that time, I was paying for meals OOP and everything seemed so expensive; although I greatly enjoyed the Buffeteria (the one saving grace). I was not wise yet on to the other choices out there.
The bus service was awful, since the Dolphin was the last stop, it seemed like you were riding the bus forever. The water taxi did definately win out, with rides from both DHS and Epcot, I only had to deal with the buses for the other two parks.
All in all, I didn't enjoy my stay there at all and haven't been back.