Fill out this simple survey about your Redbox experience and get a FREE rental code. It is good only for 6-22 and 6-23. Thanks to The Thrifty Mama for this tip. I just did it and got a code. They didn't ask me for any personal info at all. Now that's a survey I like!
If you would like other FREE codes, visit this link from Inside Redbox. The codes work for one movie per credit/debit card used.