Are they�fre any yatai in Tokyo or Osaka?

I�fm working on a photography book and one thing I want to photograph and of course eat is yatai. I know they move around but is there an area where I can find them in Tokyo or Ōsaka?

As far as I am aware in Tokyo there are no yatais. At least not if you are thinking of the Fukuoka like yatai. In 3 yrs living in Tokyo I never saw one.
Except obviously at your local Matsuri where it is full of yatai, but that�fs kind of different.

Those mobile food carts are pretty difficult to find these days.

Four years ago, there was one as the end of the street of my hotel parked every night.

https://www.google.com.au/maps/@35.6873064,139.693871,20.08z

You may just need to ask once in town if they know of one close by.