That was surprisingly uncomplicated. Left the hotel for the airport at about 3:45 AM, and was at the gate an hour before takeoff. Everything went quite smoothly, and I arrived home on schedule. This despite the fact that my flight from Toronto to Cincinnati was canceled; they simply put me on an earlier flight — which had already been delayed an hour, so it wound up leaving about the time I was originally scheduled to leave anyway.
Now I need to do a lot of sleeping before getting back to work again.