Talk about why he wants to see the movie.\n\n The R-rating doesn't ban children under 17 from a movie, it restricts them to watching it with a parent or guardian (and includes a recommendation that parents and guardians learn more before allowing their child to see the movie).

However, if the theater sold you a ticket to an R-rated movie, even though you're under 17 and not accompanied by an adult, then you have a right to be there. If you are removed, the theater will likely have to refund your ticket.