Probably you'll get lucky with other guide, but ours spoke english as most thai people do; but tour itself didnt contain a lot to miss. Mostly we heard about prices in restuarants on the riverbanks and it's constructon years. Also got manymany same flat jokes about 2 crocs escaped from farm on last flood, as reason of "dangerous waters" we traveled by.
Poor beasts unlikely to survive such a contaminated water more than a day, but clean waters and shores isn't that you expect on city river tour of course.
Several old photos on old carton with people and places of the past, but nothing you need to put yourself on boat.
Tour also includes stop in kind of cafe (a bit of sticky rice+sliced mango+sugar water) with tiny botanical excursion of some local fruits and flowers (dont expect smth special if you're not first day in Asia)
Can be nice for those who really dont know what to do in Chiangmai (if it's can be ever possible) and overpriced at least twice (we paid 500baht pp)
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