My memory is a bit fuzzy but I believe one year I checked out Kitchener around Octoberfest and none of the bars seemed to have German beer. At least not on draught anyways.
I remember the German restaurant at Ontario Place in the 1980s had some German beer on draught that was fantastic. Like DAB but even more creamy. However, when I returned the following summer they said they stopped carrying German beer on draught.