Yes, the 6th floors and up have a solid wall around the balcony, so you must be standing up at the edge to see over it. I do not like this and always ask to be on 3-5 floors. I like the slatted balconies.
Also, we usually are upgraded to balcony rooms, but the first time we ever paid for one, we were on the 3 floor, right by the ice machine (which was awful) and had a view of a ROCK. It was tucked into a corner, I wish I remembered the number. We actually checked out a day early due to the room. It was not worth the price, in our opinion.
And yes, you do need to specify INNER courtyard view.
have fun, it is a great resort!