My husband and I want to tour the Greek Isle but a cruise ship does not seem to give more than a day in each stop. We are thinking two days per destination would be better. How hard is it to travel between islands? To use public transportation on each island? Or should we try to find those "yacht" tours rather than do it ourselves? We are in our 60's, healthy and adventurous who love the sample new cuisine, walk among historical sights, experience the outdoors.