I am planning to watch the insidious movie “the last key” and and I want to if I can take my sister with me , she is 10 years old .

Depending on how old you are id say yes if youre 18 or older maybe you can tske her under the guidelines as a parental best to call first id say or even better use the inside ticket machine and get the tickets there might be easier

I was once turned away from bringing an 11 year old to a rated R movie so I do not want to say yes you can if they do the same thing to you. I would not recommend you to do it

You CAN if you're over 18. However, do you REALLY want to bring a 10 year old to see that? Just saying.