My wife and I are planning a self-contained tour in Hokkaido next month. I'm working on purchasing propane/isobutane fuel canisters on our way through Niigata but I need to know how readily available they are along the route so I'll know how many to initially buy. We'll be camping/cooking most nights. The riding portion will begin in Otaru, up the west coast to Wakkanai, then to Sapporo via the central part of the island.
Thanks for any information you can provide about this, or anything else you can add!