Hawaii has a unique sad history and is worth exploring. See the Bishop Museum and the Iolani Palace. If you are planning to go to visit Pearl Harbor, go early so you can also see the Air Museum. The Polynesian Cultural Center will give you a glimpse of the Polynesian triangle. The Mormon temple is nearby and is worth stopping in to tour. For free snorkeling, Pupukea is a good beach to go to during low tide or you can pay to snorkel at
Hanauma bay There are several heiaus around the island, you can look them up on a visitor website. Unlike Ko Olina which has a man made beach, Kailua beach is natural and popular with visitors as well as locals. If you like zoos, the Honolulu zoo is fun. There’s also an aquarium nearby. If you like Chinese food, you can get good dim sum (manapua) in several restaurants in Chinatown down town. If you plan to extend your trip and like geology, go to Kona on the Big Island. Visit Volcanos National Park to see the Kilauea volcano. It’s very active right now. If you can get a 4 wheel drive, you can also see the green sand beach. On your way, stop at the Punaluu bakery for malasadas, ( a Portuguese donut popular in the Islands.) drive up to Mauna Loa or Mauna Kea. It is at a high elevation and Depending on what time of year you go, you’ll see snow up there. Take a drive to Hilo. It’s quaint and reminiscent of old Hawaii. Hapuna beach is nice but has a fee for nonresidents. Food of all types and prices can be found throughout the Islands, especially on Oahu. You can spend as much or as little as you want. Plate lunches are starchy but good. Spam is an Island favorite and can be found in various different forms. Try a spam musubi. If you like Taylor pork roll, you’ll like spam. Lots to do. Have fun.