We are going on Destiny and will have a balcony how private is it, we would like to
spend some time out there "Al Natural" of course when the ship is at sea.
I think (but not 100% sure) that on some classes of ships, you can see into the balcony from above. Not to mention your neighbors. And watch out walking out on your balcony nude if you're in port - hehe
I wouldn't risk it! Just visit the topless deck, but leave the bottoms on ;o)
Just cruised on Destiny in March with a private balcony. It can be considered 'private' though there is a flimsy non-transparent thick plastic partition between neighboring balconies.
You can hear your neighbors and if they really desire they can lean over the rail and chat with you face to face ; ) .
But then there are standard times (around breakfast or dinner) when you can be assured that there won't be anyone in their rooms so go for it.. And I do not think that anyone from upper decks can look at you.
By the way, the topless deck is just that and not "au naturale" as you want it to be..