Oh, what you've read it on CC. 😂 Maybe they use an uncalibrated app that measures dB (?). So you don't know actually what the dB is based on your experience. Your next cruise be sure to tell the band or entertainment director you don't like the music volume while standing there wearing your "Soundcore Q35 headphones in noise canceling mode". Hopefully you are noting all this on your PCS and not just CC.
BTW, not all Harley or other motorcycle exhaust are created equally. What you find annoying is not annoying to others. I'd explain it to ya, but you still wouldn't understand.