The boat trip to the grotto is a relaxing half hour and when you arrive, you're met by a pretty girl dressed in native Hawaiian attire who escorts you to the deck in front of the grotto. The deck offers a complete view of the grotto itself which can no longer be entered after severe rains weakened the rocks in 2006. There are several local folks who put on a musical show and Hula demonstration. Then it's back to the boat for the return trip. Very pleasant 2 hr. visit.