My neighbours would be inconvenienced. 6 or 8 cabins are basically sharing the same AC. I know the answer for the current ships, but new ships are no different.   Hearing the waves, and smelling the sea while being gently rocked to sleep would be a very nice perk. Is it technically impossible, financially impossible? Would $2 extra per night for my very own AC,  $11K extra over the course of 15 years be enough to pay for it and keep it running?