Its not only the altitude that is important as we were recently at Aulani for a 10-day stay in a 1-bedroom ocean view on the eigth floor. Unfortunately it was origianally booked on the outside of the building and our view was predominately the 4-seasons hotel and parking structure. I think our room was #807 and technically the ocean was visible so they labeled this as an ocean view room, but it was not the greatest.
Upon checkin we requested to be in a room on the pool side and the only way they could accomodate us was to stay in the orginal room for the first night, then move to the Ewa tower the second, and would have to check out and re-checkin the second day, but they waived the cleaning fee. We took them up on their offer and was moved to #1152 which had a great view. Make sure to request a room on the inside, or pool side would be my advice.