How to find most intense cruise?

We are thinking of visiting the island using a cruise, however we’re struggling to find out whether itineraries match our preferences. We’re late 20s and in good physical shape, and normally have no interest in cruises, and so we’d like to find one with as much activity as possible.

I’m finding that descriptions of some cruises can be quite vague. Does anyone know how to find cruises that fit your preferences? Or, does anyone have recommendations for ‘high activity’ cruises based on past experiences?