Very good tour, a few minor niggles, but really informative and presenting a really candid perspective on the market and associated Latvian life.
The negatives: Our tour guide walked very quickly to the market, and through the market crowds. Not an issue for us, but two of the party were walking with sticks and they were frequently left behind, missing some of the chatting.
During our meal, during the dessert (the Latvian "bread soup") one of the party tried to clarify that it was called "bread soup" and not something else. (Not an impossible question given how noisy the market was, how seldom you hear of something called bread soup, and the language barrier.) I am not sure what our tour guide thought the person said, but she got really angry, said something about 'not here to play games' and stormed off from the table mid-meal for a few minutes. Nobody had any idea why or what the tour guide had taken offence to. When she came back, she carried on like nothing had happened.
The positives: you will try some genuine Latvian cuisine, from a range of pickled cabbages to Kvasse, Black Balsam, some amazing candy (Gojtina) and herring salad.
You will be introduced to a slice of life, Latvian style. We learned a lot, and we absolutely enjoyed it.
For the price paid, it was a good experience.