CORFU, Koper, Zadar, Kotor, Split. Whoever created this seven-night Balkans cruise must be a fan of ports with five-letter names. The plan was almost scuppered by Dubrovnik — but it is the P-e-a-r-l of the Adriatic, so still counts. My wife Debbie and I were celebrating our anniversary on Marella Explorer, one of five (there…