Welcome to the McDonald's Customer Satisfaction Survey on https://mcdtalks.com/ Here are the simple steps to participate in the survey: Step 1: Visit the www mcd voice (espanol or english) Step 2: Enter you 26-Digit Survey Code found on your McDonalds receipt. You must follow these terms and conditions to participate in the McDonald’s MCDVoice Survey By participating in the McDVOICE Customer Satisfaction Survey customer could win a free sandwich within 7 days with valid survey receipt code.