First off, I never been on a trip like this without my children and let me tell you it was beyond relaxing and full of adventure!
We visited Sandy's beach on the South side of the Island to Sunset Beach on the North shore of the Island to Lainkai (which was my favorite) on the east side of the island. Lanikai Beach is full of boats on the shore with some of the softest sand I've ever felt. The water looked and felt like a swimming pool. Old Pali road was a Jungle and full of a gorgeous views!! We hiked a few days, Koko Head creator has such a rewarding view at the top of Waikiki. We Went to Mermaid Cave on the North Shore, that was a personal favorite. We will be back for more adventures on Oahu... or maybe another Island.