I did a private tour. Miguel was fantastic! Very knowledgable about Tulum / Mayan history. The Tulum ruins (120 mins?) were very cool with beautiful ocean views. The Cenote Sac Acton swim (90 mins?) was amazing. It was pitch black except for flood lights in the bigger spaces. The guide uses a large flashlight to illuminate the walls, under water and the variety of stalactites. Lunch at Acumal was very good and right on the beach. The snorkeling with turtles involved navigating around lots of people and poor visibility due to floating sentiment. I am glad I visited Tulum, Sac Acton and Akumal with Tours by Locals.