When in Oahu you will be missing out if you don't visit Row Bar. It is where all the locals herf on Thursday nights. Introduce yourself and they will welcome you with open arms. Have a great trip.
There is a casual cigar event on Thursday at Bar 35. Also on Thursday a Facebook cigar club meets at the Row Bar at 500 Ala Moana Blvd. Friday evening is a Quesada Oktoberfest event at the Hawaii Prince Hotel hosted by Fujiokas Wine Times. Give Fujiokas a call about attending if you are interested.