Moon viewing night

I came across a sentence saying
‘Even today, many Japanese enjoy the full moon and offer it dumplings and Japanese pampas’, when searching an online dictionary.
Maybe more so, in Korea or China. They use lunar calendar.
Here, I doubt Japanese people still decorate pampas grass on moon viewing night that is September 22(this year).
But, we still care how the moon is seen. I checked twitter and found hundreds of tweets about moon viewing.
More people than I expected seem to have dumplings.
McDonald Japan is offering three kinds of moon viewing burgers, making sunny-side up look like full moon.