We booked with Viatour in December 2017 and they were thankfully able to accommodate us on very short notice 24 hrs after calling them directly. The company that provided the private boat tour was Thomstours. They were AMAZING!!! We had Carlos, Kimberly, Jose, Alexander, and Eddy. Everyone was fantastic! Our group of 9 had the BEST time! We didn't want it to end! Great personalities, real people - we enjoyed all of them.