Reynard said:
As with an ocean liner, an interstellar liner wouuld need routes justifying the costs. That would more often mean travel between A (and B) class starports with planets having sizable populations and above average wealth. Cruise liners are a specialized vessel that are about pleasure trips rather then people movers. More than lkely they don't have low berth or maybe even standard staterooms. Such vessels would probably be rare.
. . .
If we look at modern cruise ships, low berths would exist only to satisfy lifeboat regulations. Maybe they'd be in lifeboat type ship's vehicles (particularly in more dangerous "adventure tourism" parts of the universe where a ship might face dangers beyond mere equipment failure), but maybe they'd just be built into an emergency deck.
However, historical ships included a mix of classes. Consider the
Titanic, which had a modest number of luxury passengers and teeming masses of low class passengers (who reportedly had much better accommodations there than on competing ships, aside from the watery grave aspect of the
Titanic).
Condottiere said:
Casinos or any number of dubiously illegal activities that are technically not taking place in anyone's jurisdiction.
Actually, in the customary setting, they'd be under the Imperium's jurisdiction. But the Imperium is pretty flexible about the what activities are illegal.
bluekieran said:
I'm a bit dubious about the viability of interstellar pleasure cruises, simply due to the week spent in jumpspace - at least 2 weeks of your holiday, assuming a round trip, spent in what amounts to a fancy hotel/shopping mall you can't leave and without even the stars for a view.
At higher tech levels, leisure may be much more available to people who want it. A lot of manufacturing would be automated – something that is already causing a lot of economic tension for those who used to do jobs machines have taken over – so the main economic activities would be intellectual work, services that resist automation, services where customers don't
want automation, and maybe minimum basic income.
The relative cost of goods and services would be heavily influenced by
Baumol's cost disease.