Uber or Lyft can’t take you directly to MK - they have to drop you off at the TTC. Not certain as to whether or not the Minnie Vans that do airport runs can take you straight to a park or whether they have to take you to a hotel.
If you're by yourself, Mears' shared shuttle might be cheaper. But it will likely will take longer, as you'll have to wait for a van or bus to be dispatched and it might make drop-offs at other hotels before arriving at your destination.