I honestly hope I'm not coming across as combative or anything, because that's really not my intention. But you're responding, so I'm just sharing my own thoughts as well. Hopefully, this is just a good conversation. So here's my next thoughts.
And people lived for tens of thousands of years without indoor plumbing.. and my god they survived and thrived. It's called perspective. No they weren't vacationing anymore sipping Mai Tais.. but they weren't bloody martyrs either.
You're changing the subject. You asked a question: "if Carnival dropped you off in a country that you weren't allowed to actually enter.. or travel back to the US from. How excited would that make you?" And I gave an answer that I think nearly anyone would agree with. If my choices are onion sandwiches, limited toilets, and sleeping with sewage-scented ambiance OR spending 48-72 hours in a cruise terminal -- I think almost anyone would choose the latter.
Yes, indoor plumbing is a relatively recent introduction to society. But that's not really even close to the point. The point (which was made in direct response to the specific question that you asked) is that in such an enclosed space, almost any situation that includes plumbing, air conditioning, and a noticeable LACK of sewage odor is preferable to what the Carnival folks lived through for 5 days; even if it requires you to be "stranded" on land for 2 or 3 days.
And yes, they weren't bloody martyrs. But nobody (in this thread, anyway) has said that they were. We all realize that they were in no real life-threatening danger. But again, that's not really the point of what you originally asked.
You're not really trying to say that it's better to be on a cruise ship under those conditions for 5 days than to return to port immediately, even if it means being stuck there for a couple of days. . . are you?