Surlymama's review, Oahu tours & activities, fun things to do in Oahu | HawaiiActivities.com

Hanauma Bay Snorkel -- best value for a beginner snorkeler

Take the earliest shuttle (6:00 a.m. from your hotel) to avoid beach crowd and avoid the park fee (if you get there before 7:00 -- no additional park fee!).
Driver was courteous, informative and fun. Equipment was in great condition, and you can expand on what you get (which is basics, but enough) for very little cost.
Had about 2.5 hours of snorkeling fun.