Okay, I think the issue here is following what you were asking in your posts. It took me about five minutes of re-reading to understand what you seem to be asking.
If I understand correctly, you are wanting to eat at Trails End and want to know if you can take the bus from the parking lot to the restaurant to eat and then back to the parking lot to drive over to TTC parking to go to MK.
Yes, you can do this. I think it is the Orange bus that goes the most direct route down the middle. I would expect to take about 15-20 minutes for the ride from the parking lot to the back where TE is as there are stops along the way.
Another option would be to park at the TTC and then go over to either MK or Contemporary and take a boat to FW that comes in close to TE. Then you would just need to take the boat back to MK after you eat without moving your car. Just allow a bit more travel time to get to FW as you would need to go to MK or Contemporary before getting the boat.