You need a wedding license to get legally married in Hawaii. The Hawaii state department of health website lists the requirements and where you can apply for yours.
Where to Apply for a Marriage License
* In Honolulu - Room 101 (1st floor) of the Health Department Building, 1250 Punchbowl St. (corner of Beretania and Punchbowl Streets)
Monday through Friday (excluding holidays), 8:00 a.m. to 4:00 p.m.
* For the names, addresses, and telephone numbers of marriage agents in the rural and suburban areas of Oahu - call (808) 586-4544
* For the names, addresses, and telephone numbers of marriage agents on the neighbor islands - call the local office of the Department of Health: