For 6 year olds I would do the pirate adventures. Before you leave the dock, they paint tatooes on the kids and you if you like. and give them a Pirate name. My son was killer Kellen, ( which he loved) Then they pull up a map from the water and follow the clues through the harbor. Other boaters play along and growl at the boat and pretend to beat you to the treasure. They get the kids pretty rowdy. But keep them very safe. You are no more than 10 feet from them the entire ride. They have water cannons as well and the kids shoot targets that are trying to steal the treasure. Have a great time. But don't tell the kids any of the details! The treasure is pulled up from the harbor on a hook, They have it moored out there. (No digging required)