This is a simple tour - they pick you up from your Waikiki hotel, give you the snorkeling gear & then pick you up from Hanauma Bay again a few hours later. The driver was on time, reliable and the gear worked well. I went alone and was lucky to meet a great family there and we spent the afternoon together. Note that there isn’t much shade at the bay and the sun is hot - so plan accordingly! We were lucky to see a Hawaiian Monk Seal resting on the beach, too.