May 30, 2012 No Comments FREE 12 oz Milkshake w/ Purchase at Checkers and Rally’s Get a FREE 12 oz Milkshake with any purchase at Checkers and Rally’s with this coupon. Expires 6/30/12. Locations. FREE 12 oz Milkshake w/ Purchase at Checkers and Rally’s -EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.