The free cookie that Subway gives to customers who complete its survey is usually one of the flavors featured in that particular Subway franchise, such as chocolate chip, oatmeal raisin or white-chocolate macadamia nut. Customers must complete the Subway survey within 30 days of making a purchase.
The sales receipt, a computer with Internet access and a valid email address are necessary to complete the survey process. The survey culminates in the receipt of a coupon code via email. Customers can redeem their coupon for a free cookie at any Subway and are not required to make a purchase at that time.