Very professional crew. Very entertaining and knowledgeable guide. And the submarine cruise was a great experience! My wife and daughter are prone to sea-sickness, but had no issues with either the boat ride to/from nor the submarine.
It was cool just being below the surface in a submarine, and it was amazing to see fish swimming by the windows. The only downside was we would only see groups of fish for a few seconds, while there were long periods of only empty blue. This might just be the nature of any submarine ride though. Highlights included seeing an aircraft and a ship on the ocean floor, which have now become hangouts for marine life.
The pier location was very convenient, right off the Hilton Hawaiian Village on Waikiki Beach. And the ferry ride to the submarine site offered some nice views of Waikiki Beach and Diamond Head. All in all, a pleasant experience.
Sadly we had to reschedule this trip due to excessive swell. That was an easy fix and the trip was very exciting.