Walking around (or even biking) is one of the best leisurely wats to get to a know an island in Greece. That's why I love to visit Greek islands, is because you usually won't miss anything because everything is so quant and small and walkable. If anyone has any advice about the island of Kefalonia, I would love to know. My best tips that I have to visit in Kefalonia are Katovrahes and Melissani cave.