The Japanese Cultural Center was easy to find, there is parking in their lot for a slight fee or plenty of street parking.
FYI, it is located close to Wakiki hotels. They had 2 exhibits, one was free and had a movie which was about the intern ment of the Japanese during WW2, and the other was an exhibit about the ancestry and life of Japanese in Hawaii, there was a fee. This exhibit was very interesting and well done. What was especially nice was that the peaople at the center circulated in the area and answered questions and explained some of the exhibits.