Both of those movies have an R rating. It stands to reason that an R rating will have very strong sexual content, coarse adult words flowing freely, graphic violence, or bathroom humor as determied by the genre of the film.
It might be better to stick with the PG ratings if one does not like what is in the R rated movies.
As for walking out during the movie and telling the management you did not like it is fine - but not to ask for a refund.
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