Boat service begins at noon and continues until 2AM weather permitting. Only problem is the boat is really small (a pontoon boat like they rent)...so only 10 people at a time can ride...I read somewhere recently they were expanding boat service from OKW to include Saratoga Springs and would be using larger boats (more like the ones from Port Orleans), but I am not sure if the new service has started yet.
It is a delightful ride...we have riden over many times just for the boat ride.