We spent time over the course of 2 days at the Polynesian Cultural Center. They put on such a wonderful show there.
According to the tour books, Hanauma Bay is the place to go for snorkeling. I really enjoyed Hanauma, but I felt that we saw more fish and a greater variety of sea life at Shark's Cove.
This is the beautiful hotel we stayed at. This is a view from the back patio. All 32 of us fit into 3 separate villas. The hotel is called Turtle Bay and is located on the North Shore of Oahu.