We went to Hawaii several times before visiting Pearl Harbor.
If its too depressing for you.........it can wait.
A Must do for us on Wakiki Beach..........is take an "Outrigger" canoe ride.
Like $10 pp.
Very casual, just walk up and ask when they're going out.
One of the most FUN (memorable) things you can DO on the beach.
If you are alittle more daredevil......there's Jet-skis available, BUT they shuttle you WAY out
to a pontoon & youre driving your jet-ski in the Ocean. Alittle more intimidating, I tell you. lol