A lot depends on how much traffic there is. I would plan on about 15-20 minutes to get to the parking lots. At teh AK if you arrive early you can just walk the short distance to the gates. At the TTC you have to transfer for a monorail or ferry, and depending on where you park possibly wait for a tram to get you to the monorail or ferry to begin with. So, all in all from your front door to the gates of each resort, I would plan on 25 minutes-half an hour for AK, and half an hour to an hour for the MK. Again, a lot depends on traffic and how many others are going at the same time, and at the MK, the connections with the monorail and ferry.
Anne