Shhh, Don't tell the cruise lines but the uplift on cabins is for suckers. If you take the cost differential and put it towards experiences you'll come out way ahead.
In the olden cruising days, balconies were very limited. most cabins on a ship were inside. I love sailing inside. It is so restful and no worries about somebody smoking on their balcony, talking loudly or playing music. When I want the sit quietly outside the ship offers so many options not the 10x5' cell called a balcony.
You will NEVER sleep so well as in an inside cabin.
Let the dog piling begin from the Sweet Suite crowd, but this sailor can afford any cabin on the ship and still chooses an interior cabin.