Good stuff.
It's interesting to play up the difference in cultures.
Personally I find shopping in Japan a bit annoying.
Especially the whole thing with the sticker.
And yea I have to agree, Silence is golden, it's fine to talk, if you want to talk.
A bit of light banter or actual conversation is good,
But scripted nonsense is just annoying.
In the UK people in shops do not really talk to you unless you talk to them,
Though it is custom, read polite, to say hello to the shopkeeper when you walk into a small shop.