Things to do
Ono's - Local food - the kaulua pork is really good, and poi is really good when you mix a bunch of sugar in it...
Rainbow - very good local breakfast food - try to get there early to get their fried rice... they usually run out by 11am or so...
Giovanni's in North Shore - amazing shrimp... some of the best shrimp i have ever had.. its just a small van parked somewhere in north shore, just ask where it is...
Matsumoto's - shaved ice is very good, usually long line...
W Hotel has a lounge / club... the night life was ok
Things to do:
Go to your hotel and find the booklet guides. They usually have good deals on things to do.
and of course the beach!