I'm glad I made the effort as the festival was a lot of fun especially the amazing karakuri mechanized puppets on top of the huge floats. The old man karakuri sticking out his tongue was amusing.
Arimatsu is a small post-town on the ancient Tokaido highway (now National Route 1)between Kyoto and Edo (Tokyo) and is well-known for its high quality shibori (tie-dye) products including happi coats, kimono, bags and handkerchiefs.
Arimatsu Festival is held on the first Sunday of October each year and rearranged for the following Sunday in case of rain. To get to Arimatsu take a Meitetsu train from Nagoya, Kanayama or Horita stations.