There is indeed a balcony on the third floor of the RPC where u can view Wishes.. close to where the concierge desks are located...it's spacious and has some benches...it's also a designated smoking area..though we have rarely seen anyone out there smoking...and while you can see the fireworks. ... particularly the higher displays ..they are kind of over to the side..a bit blocked by the building configuration...and there is no music to accompany it. .still lovely..and a nice more private viewing area...
Sue I think that the balcony that you are thinking of is located on the 2nd floor..which is the Commander Porter balcony..I'm guessing it got that name due to the men's shop by the same name being right next door...lol..This balcony too is a designated smoking area...

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If you would like to see the fireworks right from the GF grounds and hear the music that accompanies it. ..I would suggest the dock area...but closer to Narcoosees. ..as the music is piped into their viewing deck (the deck is for restaurant guests only)....and there is also the marina area in front of Gaspys ...but the music being piped in there is spotty to the best of my knowledge. ...
Hth...