I booked this tour for my parents and sister. My sister enjoyed the tour and found it worthwhile. However, as my parents had never snorkelled before, they did not enjoy it at all. There were no instructions on how to use the equipment, it was just given to them and then they had to figure it out on their own. Overall, good for those that know how to use a snorkel, otherwise I'd recommend going with someone who knows how to use the equipment, or just giving this a miss.
This could not have been more simple. Definitely a must see place in Oahu. The tour company provided everything necessary for a great day. Staff was very knowledgeable and helpful. I wish I would have been able to spend more time there!! Nothing but great things to say. Very easy to book on viator as well!