Today only there are two different RedBox codes that you can use. One you can use at any RedBox like normal and the other one is for RedBox's located at Walgreens stores only. If you have a Redbox at your local Walgreens use the code dvdatwag to get one free DVD. Then while you are there you could get the addition free dvd by using the code mentioned below.
Every Monday Redbox releases a free rental code. This promo code expires tonight at midnight but you can use multiple credit/debit cards for this same promo code to rent more than one DVD.
The code for today is: D9P24G
To use the code, select whatever movie you want, go through the screens as it directs you. When you see a button on the bottom of your screen that says "add promo code" click on it and it will prompt you to enter in your code. Afterwards, it will direct you to finish out the rest of your transaction. You do have to swipe your debit/credit card still but there will be no charge put on your account unless you return it after 9:00 pm tomorrow night.
If you have any questions let me know! If you need to find a redbox near you, go HERE!