You should be able to. Be sure to have your ADR conf number with you just in case you're asked for it. If, for some reason, you can't get on the monorail or ferry at the TTC, just walk over to the Polynesian and get the monorail from there. I would plan on getting to the TTC no later than 7:30. It takes about 20 mins to get from the TTC to the CR. if you have to walk to the Poly, that will take about 8-10 mins, than just under 20 mins to the CR from there.
There are no buses running to either the MK or CR unless there is a monorail issue.
Worst case scenario.....drive to the CR, have breakfast, then drive over to the TTC and park the car.