It also depends on what is happening with the Monorails and the ferries.
There was one time where we showed up at the TTC to find both Monorails down. Everyone was directed to take the ferries and a large crowd was already there waiting to board. We ended up being able to board the third ferry sailing after we joined the large crowd.
After we got through security and the tapstiles, it was 90 minutes since the time we had left our car and walked to the trams!
The main reason why MK is not my favorite park is the difficulty in getting there.