The second full day on the island, one thing we could do is explore the city of Oia. It has restaurants and shops and we could wander at our own pace. I have booked shuttle service from Michaela to Oia at 9am, and back again at 3pm. Then we can relax, shower and get ready for the next shuttle at 6pm for our 6:30 reservation at Ambrosia to watch the sun set.