Thank you so much k&a&c'smom for such a detailed answer. I emailed this page to my son so he could see exactly what I was trying to explain to him regarding what you wrote. The pictures were perfect and he has now followed your advice and changed to a garden view room, requesting Conch Key, marina view.
Thank you again for taking the time to answer so completely with advice and pictures!!!
You are welcome! I hope they get exactly what they hope for, but I must caution that the request for both building and marina view is just a request - not a guarantee. I should have said so in the previous post, although I'm sure you've read here enough to know that!

Most people who request marina view seem to get it, as more often guests want the pool view, but I hate to encourage a change, and then someone feels let down!

If they get to their room, and it isn't the view they hoped for, they can always call the front desk and ask to be moved.
Just in case, here are some photos you may want to share with your son. The first set is from this past March; we had a marina view room in Sago Cay, which is on the opposite side of the marina from Conch. If you look at the map on the first page, you'll see that Sago is further from the main area - courtyard pool, boat dock, etc. But it is very close to the bus stop and Gasparilla's, so it's a trade off.
Room 5225 (I think), looking right:
Center:
Looking left (you can see Conch Key through the tree limbs):
And here are some pool view photos, I thought they might like to see what the pool view looks like in case they end up with one. Very pretty, I wouldn't be at all let down with this view!

Can't remember the room number for sure, but I think this was 9424 - it was BPK, and 4th floor, near the elevator.
Night shots:
Day shots, same room:
Overlooking the dreaded pool house, but as you can see, at this height it isn't much of a detraction:
Looking right, toward lagoon, that's Boca Chica in the center of the shot:
What I am trying to say - in a very long winded fashion, lol - is that there are so few bad views at the GF, I think they will love whatever room they end up in.
HTH!