Islands. If you want to experience the full Island, I would recommend staying at least 10 days and splitting your time on different parts of the island because of how big it is. Volcano National Park was really cool to see. Very laid back Island as well. It takes a while to drive to different parts of the Island due to distance but there is a lot less traffic than other islands. Definitely worth taking a trip there. If I were to rank the main Islands, It would be Kauai, close second Maui, Big Island, then Oahu. Having said that, I love all of the Islands.