I'm an older dude, and no longer find talking to strangers all that fun.

I like nature and the outdoors, but that can be admired only from a great distance until you make port. Going fishing off a moving cruise ship will end your vacation rather quickly (aside from not being feasible - you're going too fast for anything which is catchable on light tackle).

I love the swimming pools and such, but my wife can't swim.

There's all kinds of gambling and stuff, but I don't gamble.

I spent much of the cruise wishing for better internet... Or that I'd brought more books.

We spent a good amount of time playing FF7 in the evenings on our hotel TV wired up to a PSP.