The all day cab works great for a small group. We have done it several times. This year Sunseeker got a van all day for 7 of us. We loaded up the van drivers cooler with ice, beer and water and hit the road. Snorkeled at 2 Cenotes . Got to the Cenotes early and had them to ourselfs. Lunch in Akumal, then a little more snorkeling there before stopping at a friends house in Akumal. Got back in Playa about 5pm. One of the highlights of the trip.