Interesting tech discussion but back to the OP, on upcoming cruise I plan on using a blue tooth speaker and will play occasionally at low volume for ambiance. No rap, metal, or hip pop, just cool ocean vibes, Sven Van Hees comes to mind ✌️
Oh here's a crazy story, last summer I was at Zion, hiking in the Canyons and a kid behind us cranks up dumb jams on a boom box. I told him God's music was a lot better... took him a few minutes to get it and he turned it off.. yay!