I went on a cruise once to support my wife looking after her ill mother, around the Baltic Sea. Oslo, Copenhagen, St Petersburg, Tallin, Stockholm etc.
Expensive, constraining (no itinery flexibility as you’re ‘tied’ to a boat), 110000t Royal Carribean cruise liner felt like a cross between Butlins and a shopping mall, who gives a toss about the planet anyway…..
Summary – for grave dodgers who don’t mind an elevated risk of catching the flu and don’t care about the environmental cost of their holiday.