Hi all - My husband & I are flying into the HNL airport from Kona for one day on Oahu (arriving around 9am, departing 6:50pm). We hope to visit USS Arizona @ Pearl Harbor, Diamond Head and maybe shop in Waikiki Beach. It's a full day, but want to get opinions on renting a car for the day, or taking the bus? I see the bus stops at all 3 places, but how long will this take? Will this allowe time to go to all 3 places, are we dreaming?! I heard it's cheapest to rent a car, but my husband is worried about traffic in Waikiki/parking. Any advice on the bus lines??