In the community Community festivals Canal Cavalcade 2019 IWA Canalway Cavalcade is London's biggest, brightest and best waterways festival. This unique waterway boat gathering is organised by IWA volunteers, and has been taking place at Little Venice since 1983. Book your spot for 2019 on the Waterways website ... Bookings are open for our 2019 IWA Canalway Cavalcade. Book online or download and print a booking form.