Yes: R Rated MPA Guidelines:. Contains some adult material. Parents are urged to learn more about the film before taking their young children with them. https://www.regmovies.com/static/en/us/admittance-procedures
It depends on the rating of the movie. Still it's been known that children have been admitted inside R-Rated movies along with an adult.
I think so. What's wrong. I used to watch a lot of horror movies in my childhood.
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