May 12, 2018 No Comments FREE Mamma Mia Sing-Along Screenings On Sunday, May 13th, select AMC theatres will have FREE Mamma Mia Sing-Along screenings. Free tickets are available on a first come first served basis starting at 9AM. FREE Mamma Mia Sing-Along Screenings – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.