To start the McDonald’s survey, visit the official website mcdvoice.com survey. First, ensure you have a recent McDonald’s receipt, as you’ll need the survey code or store details printed on it. Go to the website, enter the required information, including the survey code, date, and time of your visit, and click "Start." Answer all the questions honestly based on your recent experience. The survey typically covers topics like food quality, service, and cleanliness. Upon completion, you’ll receive a validation code, which can be used to redeem the offer mentioned on your receipt during your next visit to McDonald’s.