Hi Krazy4Kruisin, welcome to Cruise-Chat. While I've only visited Oahu, Maui, Kuaui, and the Big Island, I can offer a few suggestions. On Oahu the Arizona, Pearl Harbor, and the Punch Bowl was a must see. Hanauma Bay is great for snorkeling. We also went to the north side of the island where the pipe line is. The beach was nearly deserted unlike Diamond Head which was packed. It's an easy island to get around, so my suggestion is to rent a car and go exploring. Maui and Kuaui are beautiful islands, we did a helicopter tour on both of them. It was very expensive, but the scenery was unbelievable. On the big island, we took a tour from Kona to Hilo and back across to Kona. We visited the volcano, an emerald beach, a black beach, a beautiful botanical garden with a magnificent waterfall, and tasted fresh brewed Kona coffee. It was a full day excursion, but we did see a lot. Hope this gives you a few ideas. Best wishes and once again, welcome aboard!
There is so much to see and do in Hawaii. The must see things will vary depending on your likes and dislikes and personality. There are many wonderful things to do if you are more of a nature/scenic person, and many activities if you are more active and like the beaches. Penny has mentioned some on Oahu. Also on Oahu is the Polynesian Culture Center (good luau), the Dole Pineapple Plantation, and Hilo Hatties. Kauai you might enjoy a drive to the Fern Grotto, and in Maui you might enjoy a drive on the road to Hana and the Lahaina luau. On the Big Island you might enjoy seeing the Kilauea volcano. There is so much to see, maybe this site will help you.
Lots of wonderful things to do and see...but bring MONEY....it isn't cheap....but remember..it's only money....make memories... Happy Sailing...Aloha...