I'd expect that they tend to extract a lot of concessions, especially from the lower-tier stops. * Were the quaint little towns, the ones adjacent to a natural

I'd expect that they tend to extract a lot of concessions, especially from the lower-tier stops. * Were the quaint little towns, the ones adjacent to a natural feature, the fishing villages or historically relevant cities, ready to support a million-tonne liner with huge clearance requirements, even aside from any first-order pollution needs? Who's paying to build and maintain facilities, and when the programme changes and the service is abandoned, who cleans it up afterwards? By comparison, cargo ships tend to dock at more purpose-built facilities "elsewhere"-- points specifically chosen for their capacity, but you can't really tell tourists "we're docking here, and taking a four-hour bus ride to the actual attraction city?" * How badly does the town get coupled to the tourist economy? Will you end up with 82 trinket shops but no local grocer? Cruise tourists tend to be much more "captive" than most self-directed modern tourists-- so it can turn into a game of kickbacks to ensure that that the tour itineraries and maps showcase your business instead of your competitor, draining profits from the local community. Aside from that, a damning factor of cruises-- and to a lesser degree international ships in general-- is the tendency towards "flags of convenience." It screams that the business isn't viable if they're held to first-world labour, operational, and environmental standards, and it means it will be virtually impossible to corral them for things like "you have to be carbon-neutral" short of raising huge international fracases and closing ports.