We did the excursion to Paleokastritsa and the monastery there. A scenic tour that allows you to see the different beaches and vistas. The views from the monastery were just beautiful, and I would have loved to spend some time at the beaches as well. We had time in Corfu with our guide, and were then given the option to stay on and explore of go back. There were shuttles to the ship running, so staying on and exploring made good sense.