<p class="MsoNormal">[size= 12.0pt; line-height: 115%; font-family: 'Aparajita','serif']If you want to get free food from McDonald's, participating in their customer feedback program is the best way. First, keep your recent purchase receipt because it contains a survey invitation code. Visit the official mcdvoice survey website and enter the required details from your receipt. Complete the survey honestly by answering questions about your experience, food quality, and service. After finishing, you will receive a validation code. Write this code on your receipt and bring it on your next visit to redeem your free or discounted food offer. Make sure to use the reward before it expires.[/size]