Can you recommend anything too see!!!
Polynesian cultural center is a must. Stay for the Luau.
Waikiki beach, but be aware, there is a "***" section.
Perl Harbor
Punch Bowl - It's a WWII graveyard/memorial.
Haunama bay is great snorkeling. The native Hawaiians claim that place though and actually shut it down for a while. Not sure where they are at with that. Or was that sandy beach, I can't recall.
Ala Moana - Big shopping center and a park
Iolani Palace - Guided tours only. Try to catch the Royal Hawaiian Band at the Band Stand if you can. This is also where the famous statue of King Kamehameha I is located.
Bishop Museum - If you like Museums, it's a good one.
There is Sea Life Park, but it's in the middle of nowhere on the far side of Oahu.
If you want to see actual Hawaiian's, go out to Waianie or Wahiwa. Honolulu will be mostly Japanese, Philipino, and Haole. Don't go out there at night, and even in the daytime, watch where you are.