I saw Predators in the theater at 16, one year too young to get a ticket myself. Had my mom go up to the counter and get the ticket for me (and for my friends as well). They only carded people when purchasing the tickets, not when walking into the theater with the tickets, so that was the perfect workaround to their system at the time that allowed me to get into the movie without having to sneak in. Had her do that for a few other R rated movies around the same time, when I was right on the cusp like that.