The trouble with a cruise vacation has always been the immutable itineraries—embark in Fort Lauderdale on Sunday, disembark in St. Thomas a week later. Never mind that Wednesday to Tuesday would be more convenient. With the launch of Silversea's Personalized Voyages, a ship's timetable and yours can finally mesh. The program, which debuts next year on all sailings aboard the newly minted Silver Cloud, creates a hop-on, hop-off excursion, rather than a fixed tour. To view all the options, log on to www.silversea.com and scan the ship's itinerary; then select any five-day (or longer) segment. The per diem price is the same as that of any regular Silversea voyage and includes all the fixings, from nightly entertainment to gratuities. The flexibility lets you take advantage of a window of opportunity a lot wider than any porthole. 877/215-9986; www.silversea.com; from $495 per person per day, double.