Swap an independent ferry trip to Santorini from Crete for a full-day tour that includes a cruise and sightseeing once you’re there. Avoid the hassle of arranging your own cabs or buses on the Cycladic island; and simply sit back and admire its whitewashed clifftop towns as you sail the caldera. Then, enjoy a coach tour with time to stroll in the capital, Thira; Oia, and along the island’s clifftops.