To enter the McDVoice survey with a receipt, visit mcdvoice.com survey and enter the 26-digit survey code printed on your receipt. If your receipt lacks a code, you can manually enter store details. After accessing the survey, answer questions about your recent McDonald's visit, including food quality, service, and cleanliness. Once completed, you’ll receive a validation code for a reward, such as a discount or free food item. Ensure you complete the survey within seven days of your visit. The McDVoice survey helps McDonald's improve customer experience while offering rewards for participation.