The first 250,000 to enter will receive a free Chick-fil-A chicken sandwich. The next 750,000 to enter will receive a coupon for a medium free Coca-Cola Zero. As of right now, only around 189,000 people have entered, so there's still time to receive a free sandwich.
In addition, one instant winner per day will receive a $50 Chick-fil-A gift card. Plus, you can invite friends and family members to sit in your section of the online grandstand. All of the members of the biggest grandstand, which can include up to 10,000 people, will receive a 2010 Chick-fil-A calendar.
Entry into the Chicken Wave Sweepstakes is open to US residents aged 18 and above. Enter once before October 31, 2009.