I lived in Hawaii for much of my life, but never went to Iolani Palace. Don't know why it wasn't a field trip when I was young. I highly recommend this as a great stop early in your vacation to Hawaii. I always feel that people who visit Hawaii don't have any kind of understanding about Hawaiian history and this tour will absolutely give you a baseline for that which will enhance your whole trip to Oahu. It really will. I wish we had made prior reservations so we could have gone on the guided tour but the self guided tour with the headphones was just fine (except that mine weren't working very well). Make sure that you go sit in the little theater to watch the short movie prior to your tour time as that really brings alive what you are about to see. Hint: even when you are doing the self guided tour, there are tour times you are assigned to, so don't expect to just walk in, pay and then go on in. They work hard to make sure that it is not crowded when you are in there, which is wonderful. I highly recommend this to anyone, resident or visitor if you haven't been before.