Phi phil - Simple. Minus one star for each of the following 1. Too many people in a boat 2. Too much time on the boat. Off the boat for approximately 2 hours. 3. Terrible lunch! Make sure to eat breakfast and bring your own snack they just provide water 4. Very cheap. You even have to give the plastic wrist band back. 5. They can’t controlled the water and waves. But they can control the speed for safety specially with elderly and kids on board!