Question: I would think that any of the balcony cabins inside facing either central park or boardwalk would actually be challenging cabins to have as anyone can see into your cabin either from those down below or those directly across from you?
I see these cabins as similar problems that the Royal Promenade cabins have, whereby you end up having your shades drawn so you can have your privacy; therefore, kind of pointless. Yes, I'll agree people watching from your balcony may be entertaining; however, you definitely give up the privacy.
Personnally, I'll stick with the ocean facing cabins as I wouldn't enjoy the lack of privacy.