Mostly on the weekends, the parks open at 8am or 9am officially (if you don't include MM/EE). It is most likely that the parks will be open at 9am during that weekend.
Here is last years November 2013 Park Hours which will give you an idea of what the park hours are like in the past in November.
As always, Y'all are very helpful!! I am just getting so excited for our trip now that we are under the 60 day point. I have a reservation for us at Plaza Inn for the Minnie breakfast on Sunday the 9th!