It was a few years ago during a cruise on a Norwegian Cruise Lines ship when in my travels around the ship I noticed there was a "Freestyle" deck. The ship had a "Family" deck, "Party" deck, "Quiet" deck and some others, but I had no idea what the "Freestyle" deck was. So I decided to investigate. You had to climb a set of stairs and go through a frosted glass door to get there and immediately my question was answered. I guess "Freestyle" is another way of describing "clothing-optional". I quietly turned around and went back down the steps.