The validation code obtained from the McDVoice.com survey is typically valid for 7 days from the date of receipt. This code allows customers to redeem the offer printed on their McDonald's receipt after completing the feedback survey. To ensure you can use the code, its important to visit your local McDonald's and redeem the offer before the expiration date. The validation code is non-transferable and must be presented with the original receipt to claim the reward. Be sure to check the terms and conditions associated with the mcdvoice.com survey for any additional restrictions or updates on code validity.