An air tour of the island is a must. It is amazingly beautiful. We opted to take the tour the afternoon that we arrived in Kaua'i. It was the best thing we did. The pilot was extremely informative, and you can ask him as many questions as you want. I took a lot of pictures. There were some things that we went to after taking the air tour because they looked interesting from above. The pilot had lived on Kaua'i most of his life and therefore knew a lot about the island. He told us what to do and what not to waste our time on. He asked if there was anything special that we had heard about and wanted to see. It seemed like he really wanted to show us what we wanted to see and not miss anything.