Seven Seas Driver actually for open to all vehicles.
1. As you near the booths for MK parking, stay to the far right, but not the last right lane (that one is for buses.)
2. Just after you get through the booths, there is a section that goes to the right. Take this, just watch out for buses coming from your right. This is the road that leads to the MK Resorts.
3. After getting in the right lane go straight and stay in the left lane when it becomes 2 lanes.
4. When you come to a left turn lane and a stop light, take the left. This is Seven Seas. You will see the TTC parking on your left and the TTC on your right.
5. The Poly will be on your right. You should be seeing signs as you get closer.
If you use an online map that lets you look at street view, you should be able to follow the route for most of the trip until near TTC on Seven Seas. This will give you some visual.