Is the Sapphire Princess Cruise fun if you are an 18 year old girl?

The Sapphire Princess is a beautiful ship with tons of stuff to do. If I remember correctly, they open up a night club just for your age group. It's more like a disco, but no adults allowed. You can do many other activities such as play the amazing race game, or pool games, or go dancing, watch a movie, or just watch the sights. Your going to have a fantastic cruise.