Customers who take the Eat'n Park Guest Satisfaction Survey get a reward, usually a small discount off their next meal. As of 2015, the actual reward varies by location.
The reward is printed on the receipt, along with a 13-digit survey code needed to access the online survey. A discount of one or two dollars off of the customer's next meal is offered at some locations for completing the survey and returning the receipt with a validation code.
Members of the "Smiley's Email Club" promotion may also periodically receive coupons and offers to take surveys in return for rewards. Signing up for this club does not require a receipt code from a restaurant.