To claim your McDonald's cash prize, follow the instructions provided on your winning game piece or digital notification. Typically, you’ll need to complete a form with your personal details and submit proof of your win, such as a receipt or game code. Some prizes may require verification through mail or in-store visit. Be sure to check the official rules and deadlines for redemption. Additionally, participating in the mcdvoice.com/survey after your visit can enhance your chances of winning more rewards in the future by providing valuable feedback to McDonald’s. Always keep your receipts for eligibility.