you could, but it'll take a lot longer. the 10 minute walk to the MK is right where the buses are. if you want to take the monorail, you'll deboard the bus, go into the hotel, up to the concourse and take the escalator to the monorail station. you'll stop at the TTC, the Poly and the Grand Floridian before making it to the MK. and hoping there are no delays along the way.