I have just gotten back into this program. It's great! You don't need to have children in diapers. Anyone can join Huggies Enjoy the Ride Rewards Program. You can keep your account updated with all of the free codes Mercedes at Common Sense with Money posts on her blog. Just by joining the program you enter for a chance to win a year’s worth of diapers.You can find all of the past codes HERE. Good luck!