The boat goes from MK to GF, then the Poly. If you catch the boat as it leaves MK, you will only need 10 minutes to get to GF and then walk to 1900 Park Fare. I would take the boat, but arrive at the boat launch at 10:30 anyway in case the boat has just left and has to make the full circle. The monorail has to go from MK, to CR, to TTC, to Poly, THEN GF. It takes a while no matter what. The boat is an easier, quicker ride.