Personally I think if you were going to make a poster for a Japanese themed spring festival, and you did NOT include some sakura, you completely misunderstood the assignment.
Your promotional poster for a community gathering should not be subverting the western gaze on Japanese culture, or any other concept from art criticism 101.
It's supposed to get average people in your neighborhood to glance at it for 5-10 seconds and say, "cool looks like a good time"
Artist here. I'd rip off Kawase Hasui 100 different ways without using sakura or subverting anything.
More like 100ms or less as their visual field coincidentally sweeps over wherever the ad is posted in the physical world. In this regard, it's even more important to use something people subconsciously associate with your thing.
YMMV but my experience tells me that the more cliché something looks, the more likely it's bad/cheap.
I've never been in a cliché-looking restaurant that is actually decent.
Meanwhile, the best restaurants I know have, at best, a flag or some kind of small drawing to give a clue about their nationality, but otherwise they look like a regular local one.