hop in a pool suspended five stories above another pool on the deck of a ship that looks like the result of a mad scientist hybridizing the genes of an airport duty free terminal, a private athletic club, a five-over-one and the Evergreen Ever Given (with just a splash of Six Flags for flavor)
This is a fair assessment except the environmental part. Cruise ships are notoriously bad because they run on fuels, while most trains these days run on electric. Furthermore, it is common for them to switch to a dirtier fuel when they are away from the port and in international waters because there is no regulation.
Beyond the emissions, cruise ships also commonly straight up dump waste and junk into the ocean.