it's not near the monorails at MK. it's on the side closer to the buses, it's next to the one for the TTC ferry - it'll say resort launches.
note there is also a bus (stop #1 at MK) which can be a quicker option.
also note the boat changes its route throughout the day. in the morning, it'll go from FW -> WL -> MK. in mid-afternoon, it switches to MK -> WL -> FW
so if you're going from MK to WL in the morning, or going from WL to the MK in the evening, the bus will be much quicker