Scenic coastal walk with great photo spots of the Golden Gate Bridge and rugged Pacific cliffs; the outdoor path is open daily (public access typically 24/7).
Iconic island prison tour including ferry and audio tour; reservations sell out so book early — first ferries around 8–9am, later departures through afternoon (official tours generally run 9:00am–5:00pm).
Catch a relaxed sunset from the beach or the Diamond Head lookout for honeymoon photos; outdoor spaces are open daily, but Diamond Head summit access has morning hours for the crater trail (usually ~6am–6pm).
Visit the USS Arizona Memorial and Pearl Harbor Visitor Center; tickets or timed entry often required and the site usually operates around 7:00am–5:00pm, so reserve in advance to secure preferred times.
Explore the WWII submarine museum and step aboard the Battleship Missouri; visitor center and ship tours commonly open mid-morning through late afternoon (check individual vessel hours).
Celebrate your honeymoon with a refined Hawaiian-fusion dinner; these restaurants are popular and require reservations, often open evening hours from ~5pm.
World-famous snorkeling with colorful reef fish; Hanauma Bay requires reservations and typically opens early (often ~6:45am–4:00pm) and is closed on certain weekdays — check and book in advance.
Moderately steep 1.6-mile round-trip trail with panoramic Honolulu and ocean views; park access usually open morning through late afternoon, carry water and sunscreen.
Short inter-island flight (about 30–45 minutes) to Kahului, Maui; pick up rental car and head west toward Lahaina or upcountry depending on arrival time.
Mama's is a top-specialty spot (book weeks in advance) for a special honeymoon lunch; Paia or local fish markets are excellent alternatives for fresh seafood.
Early-morning boat trips depart from Maalaea or Kihei and offer world-class snorkeling at Molokini and nearby reefs; tours usually run 6:00am–12:00pm depending on operator and sea conditions.
If you prefer land adventure, drive part of the Road to Hana to waterfalls and short hikes; the full loop can take a whole day so plan accordingly and avoid driving the last bit after dark.
Boat or kayak trips to Kealakekua Bay offer excellent snorkeling in a marine preserve; many tours depart early and run until midday — reserve in advance.
Plan a full day visit to Hawaii Volcanoes National Park — the park road and Crater Rim drives allow exploration of steam vents, lava tubes and trails; park is open 24/7 while Visitor Center hours often run ~9:00am–5:00pm.
Mauna Kea summit access often requires 4WD and acclimatization; most couples book a guided stargazing tour that handles permits, transport and safety since summit conditions are extreme. Tours usually run in the evening and return late at night.
Unique nighttime experience swimming with manta rays under lights; tours depart after dark and last ~2–3 hours — reservations essential and age/health restrictions apply.
Long travel day with at least one connection on the mainland; plan for total travel time including connections of 9–14+ hours depending on routing — confirm flights and baggage connections the night before.
Arrive back in Nashville and head home to rest after your honeymoon; keep in mind possible time zone changes and customs processing if routing via an international hub.