Hello! We are heading to Rome next September for a cruise to Naples (Capri/Pompeii), Dubrovnik, Kotor, Corfu, Messina (Sicily), and Livorno (Florence/Pisa). We were hoping we wouldn't have to take a tour at every port, but wondering if anyone has any insight on these ports. Are any of these ports easier to just walk around and see some sights? Thanks so very much with any information shared!!