I'm with Diane, we spent 3 days on Oahu and rented a car one day to do Pearl Harbour. Yikes on the traffic! We stayed on our Wyndham points at Waikiki Walk, good location.
Couldn't wait to get on the plane and get to the Big Island. We did a week there and the following week on Kauai.
Noticed at both the Wyndham Kona Hawaiian and the Westin Princeville(yes both exchanges, 2br units, used non-
DVC TS's) that people took off in the am and didn't return till late afternoon. Lots to see and do to. We are an active outdoorsy family, so both locations worked for us.
If we go back to Hawaii, doubt if we would stay at Aulani, as we really enjoyed Kauai and the Big Island and would like to try Maui. If we came in mid week, we'd prefer to stay in Honolulu itself.