Depends on whether or not the monorails have returned to normal schedule by the time the OP is traveling. Currently, the Resort Monorail starts operating at 8:30 a.m., with buses running before that time. The boats normally don't run that early. So: take bus to MK; if monorails are running, take Resort Monorail from MK to Poly; if monorails are not running, take bus from MK to Poly. The driver of the bus from AoA will be able to tell you whether the monorails are running, and if they are not, where to catch the bus to Poly. Start travel at least 1 1/4 hours before reservation. From Poly to DHS, there is a bus.