We took a Free Walking Tour in Edinburgh on the beginning of March with a guide nicknamed "Katy".
Katy started her tour saying she expected at least 10 pounds per person as a tip, and if we didn't agree she and her colleague could easily recommend us another free walking tour in Edinburgh, since there were many. Although she said she volunteered for some kind of women's shelter back home, I really don't think this is the right way to start a FREE walking tour (and I have done countless throughout Europe).. If I wanted a fixed priced tour, I would have done it. I like the freedom to judge my tour guide and give them what they deserve, so I found it extremely rude.
Second of all, I truly believe Katy is not good at public speaking, because everything she said felt memorised and as if she was reading something, even her jokes, which was extremely awkward for everyone.
Also, it was considerably windy and cold in Edinburgh that day, and perhaps the tour should be a bit tailored for those days? Maybe enter a church for 5 minutes? It was excruciating to be stopped in a place for 20 minutes while Katy explained something. So much so that we and other people had to leave before the tour ended. I would say though that the information was interesting, if only she would motivate us to hear it.