OH you lucky duck...my sister lives there and I have been twice and just LOVE it.
OKay a for sure is go to "Ko Olina" (hope I that is right) whihc is a BEAUTIFUL beahc area with 4 coves - SOOOOO Pretty. I posted a picture of it.
http://www.koolina.com/hotel.html
Than if you are a thrill seaker liek myself - hee, hee do the HAWAII SHARK ENCOUNTERS.... I included the wesite. It is a must - so not the norm and Super cool!!
I think by far one of the scariets things I have ever done but by far one of the coolest!!
http://www.hawaiisharkencounters.com/