I’m reasonably sure the often-curmudgeonly David Foster Wallace went into the experience already prepared to write a negative essay.
Cruises have pretty wide-ranging characteristics. If someone is interested, it’s worth looking at factors that matter to you, such as size, dining ratings, average cruiser age, what they’re known for, etc. For me, destination matters most, followed by size of ship/number of passengers, time of year/school vacation dates, cruiseline ecological measures, cruiseline health measures, quality of excursions/ease of arranging our own adventures. I’ve gone on terrific hikes and other outdoor excursions, visited ruins and ancient buildings that would have been difficult to get to on my own, visited excellent museums (for example, the Hermitage, the Bardo National Museum, the Titanic Experience), fascinating religious site (such as the Church on Spilled Blood, Notre Dame, old synagogues, Mohammed Ali mosque), natural sites (for example, Lake Gatun) and seen a lot of wonderful botanical parks, animal sanctuaries, and animals and birds in the wild. I’ve seen Little/Fairy/Little Blue, King, Gentoo, Adelie, Chinstrap, Magellanic, Humbolt, and Galapagos penguins. In Romania, I saw the courtyard where the Ceausescus were executed. In Hawaii, I walked on a lava field past active rivulets. In Japan, we toured Hiroshima and Nagasaki. All ship’s excursions.
Arranging tours on our own, we’ve had a boat ride on the Seine, toured the Jerusalem Old City, visited Nara and shinto shrines, and taken a ferry to a native bird island in New Zealand. We’ve seen hundreds of bird and animal species. We’ve also had good meals both on shore and off the ship. Cruises give my lovely wife many more medically-restricted food options than does a land tour. I like to get up early and watch for big fish, birds, dolphins, porpoises, seals, and turtles as we arrive in port, often while walking a few miles on deck with binoculars and an audiobook. We usually take in music in the smaller venues, or find somewhere quiet to read or write. Now that I’m retired, I no longer need to be on call for my jobs, but we usually buy internet for a few 24-hour periods. I like to walk around and explore new places, and my wife likes to unpack once and not be hauling her bag over cobbles every day. If one of us has an injury or medical issue, we can go on shore for a coffee or stay on the ship or take a sightseeing bus or train. As women traveling without a man, we can choose a ship excursion that is safer anywhere we’re not sure of. As a Q couple and for me as a person of Jewish heritage, there are places I’ll visit with a group and not on my own.
I might have two drinks during a cruise. I might get one soda. If it’s unexpectedly cold, I might buy a sweatshirt with a sloth on it or a windbreaker with a wallaby. I might dance a little or listen to a band. I usually go in the pool. Many ships have a quiet adults-only area with a pool, cover from the sun, and a vegetarian/smoothie cafe with tables. We rarely go to shows. We mix dining at a table with other people with a 2-person table.
My preference is for Celebrity Xpedition, Hurtigruten Expedition, and river cruises. They’re smaller, the entertainment is mostly or entirely geared to the destination (for example, on our Tauck lower Danube river cruise, we had talks from a Serbian and a Croatian crew member about their experiences of war between their countries, and in Antarctica we had talks about marine life). Dress on these is informal (in Antarctica, boots were prohibited in the dining area and walking around in socks and sweatpants was encouraged) and for those to whom it matters, drinks are included, as well as the excursions.
It works well for me. You’ll never find me at a Disney or lying on a beach. De gustibus non est disputandum.*
*YMMV.