Yes. Currently, the state of Hawaii now requires non-Hawaiian residents to make reservations for the following activities: Pearl Harbor National Memorial Sites, Diamond Head Crater Hike and Hanauma Bay Nature Preserve. For Pearl Harbor, if tickets are sold out you can do a Stand by option. Please plan accordingly if you wish to patron those locations. For more information: https://thepointsguy.com/news/advance-reservations-hawaii-parks/ Pearl Harbor Tickets: https://www.recreation.gov/ticket/facility/233338 Hanauma Bay Nature Reserve Tickets: https://pros10.hnl.info/hanauma-bay Diamond Head State Monument Tickets: https://gostateparks.hawaii.gov/diamondhead