We were very disappointed in this tour. It doesn't cost anything to get into Pearl Harbour and the amount of time we had to spend there was too long, 5 hours from time of pick up, get out to the memorial and tour the sub. The tour of the city left a lot to be desired as we didn't see much, weren't given highlights nor did we have any opportunity to take pictures. We spent more time on the freeway than doing any sightseeing. As a result, our overall opinion of Oahu was not very good. By wasting so much time, we didn't get to see very much and the cost for what we saw was exorbitant. Had we known what little we would see, we would have booked a much different tour from the ship which would have given us a much better perspective of life on Oahu.
We had used Viator on our European vacation with similar results so consequently we will probably not use Viator again. We had hoped that our European experience was just a one off but obviously it wasn't.