This images shows the morning route for Monday’s festival parade. Personally, I’d recommend the beginning at about 6 AM that day. That’s when everyone is fresh, sober (for the most part) and looking their best.

– Kirk

P.S. I took the image from a pdf put out by the police to show areas where traffic will be restricted that day:

http://www.pref.kumamoto.jp/police/page1060.html