I though I will get some good informative walking tour( had several in Chicago ) about historic events, interesting facts, dates, famous quotes , but it was boring, nothing interesting at all same information I can read it in Freedom trail booklet. Our tour guide was an older man, his voice was not loud to hear him speaking l, since there were multiple groups at the Trail it was a little crowded. I even walked away to listen younger guide ,who was passionate and more articulate on subject. I asked few questions about Copley square and Common Park history, he was not able to answer them. Later I just walked away to explore on my own.
Please don't waste your money, it's not a lot from a person , but from group of 10 for a walk and some absolutely average information- find a tour - one where guide dressed up as historic figure-much better, more fun, since I listen( over-heard story line) to them.
I think personality of tour guides and their readiness to deliver quality tour it is matter
I actually did research on my own just look up some information about for example : the legend of a golden grasshopper above Faneuil Hall - it's small, but interesting story, which our guide had no idea. That is why it's not a tour it was a stroll with strangers accompany with older passionless guide