This came up yesterday with some visiting cyclists. What would be useful would be to filter hosts who can help or give advice with mechanical issues. Sometimes a touring cyclist needs guidance as to what shop would be able to help them out, given their situation. And those to avoid.
They had a problem with clicking in their rear rim (joint) and decided to get it replaced, rather than run the risk of it self destructing. It was a 40 spoke (tandem) and they could not get it sourced in Kingston ON. After a bunch of scurrying around they found one in Ottawa. Rented a car and drove up, only to find out that promises to rebuilt the wheel were empty (store not to be named but I'm not surprised. I wouldn't have sent them there, had I known). They ended up buying a truing stand at MEC. and rebuilt it themselves. In hindsight they could have contacted me but that didn't occur to them at the time.