It's been awhile since Redbox has released a general promo code that is valid for two days! Today, July 16th and tomorrow July 17th you can get a free 1 night movie rental at the kiosk or reserve online! Use the promotional code FRIENDS.
The fine print: Code expires 7/17/14. One code per transaction. One time use of the code. Charges apply for additional days. Can't combine with other offers.