Going from Orangeville to Ottawa (which I do a few times a year) is easily done in summer, with a stop in Kingston. In winter, it's iffy to get to Kingston, so a stop in Port Hope and Kingston is necessary. Really, Port Hope and Brockville would be nicer; break up the drive better.
Also
I have had issues with Kingston. The only time I nearly bricked the car, was due to Kingston running at about 30KW. I was due at a wedding, so I couldn't get a fast enough charge. I waited until I had about 15KM over the required range to Kanata, and left. I got there with 3 KM of range, and got to see the wedding. (There was a 15 amp duplex to charge, so I limped back to a Plugshare at the Kanata Library, afterward). It wasn't the only time I've had issues at Kingston.