Yes, you can take the McDVoice survey more than once, but there are some limitations. Each receipt with a valid survey code allows one entry. If you want to take the survey again, you’ll need a new receipt with a different code. McDonald's values customer feedback and encourages multiple entries to improve service. However, there's a limit to how many times a person can enter in a specific period. Be sure to follow the rules stated on Mcdvoice.us.commcdvoice.com survey to ensure your feedback is accepted. Taking the survey multiple times helps McDonald's enhance the dining experience for all customers.