The movie has been a massive hit in Japan so far. Haven't gone yet to see it as I am a bit scared of going to cinemas but it's a bit crazy how popular it is. News are talking about it and there's Kimetsu collaborations with just about everything.
I traveled to Fukuoka recently and they were talking about a temple there called Kamado Temple, which has apparently become quite popular with people nowadays because of the movie. When I went there it was full of kids cosplaying lol