"These days, cruise ships are attracting younger holidaymakers, and this new generation of cruise-goer is having an influence on the very itineraries being offered.The "time poor" nature of these guests is fuelling a trend for shorter cruises, particularly evident on Mediterranean itineraries.For example, Crystal Cruises is planning three- and four-night "taster" voyages as well as seven-night Mediterranean cruises for next year." (Quoted from article)