A brother and SiL of mine, ditto a sister and BiL, are very keen on cruises (smaller ships only), or they were, before Covid put paid to them for now. Sister and BiL have just been bumped off a U.K. waters cruise because of restrictions. They did book late but sister was very disappointed.
Dh and I have never fancied them, because like a pp, we were fish in previous lives and like to be in the water, rather than on it.
One mini cruise I’d love to do again, though, was a Greek island thing for about 4 days - we were on hols with friends - 12 of us inc. kids, when we saw a lovely wooden yacht in the harbour, saying for hire with skipper, sleeps 12!
It was brilliant - no dressing up, lazy island hopping, lots of swimming off the boat in gorgeous aquamarine water, tying up each evening and finding a simple harbourside taverna for dinner. And remarkably reasonable.
I could do that again any day - preferably for more than 4 days though!