November 10, 2012 No Comments FREE Longostino Lobster Taco at Rubio’s RSVP to get a FREE Longostino Lobster Taco at Rubio’s. The event dates available at most locations to get the free taco are on November 14 and November 15, 2012. Locations. FREE Longostino Lobster Taco at Rubio’s -EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.