I was looking at seeing Pearl Harbour a day or so before our cruise leaves. To do it on your own, do you see ALL that is offered through a tour company? I get that the admission to the National Park is free, and maybe you do have to pay to see other parts? Arizona Memorial, Battleship Missouri, Sub, Aviation Museum, Oahu Circle Island? Thanks for the advice. Oh and is parking easy there? We're renting a car for a few days too,