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.