We were on a balcony on Adventure of the Seas last summer, and I will never go back to a regular OV cabin!! We were on the 6th deck, so the bottom of our railing was metal. . . The balconies on the decks above us had plexiglas, so they were able to see through the lower portion of the rail. However, it didn't bother us.
Our balcony ha two chairs and a small table on it. .. I cannot begin to tell you how much I enjoyed sitting on it in the morning as we pulled into port or in the evening as we pulled out. . . .One of my favorite things was sitting on it during the afternoon we were in Barbados. I was reading, and down below a steel drum band played. It was wonderful!
You'll love it!!