McDonald’s conducts Customer Satisfaction Survey through an official website www.mcdvoice.com. On Mcdvoice homepage, customers who have a valid receipt are eligible to take the www.mcdvoice.com survey. In Online sweepstakes, these could win the jackpot in the contest. This Mcdvoice Survey will be organised by McDonalds. Why should you take the Mcdvoice Com survey ? As the purpose of this online sweepstakes is McDonlad’s wants to know that customers are satisfied or not with the products, services, so that they strive to work on quality-improvement processes through sweepstakes. If you are a beloved customer of Mcdonald's restaurants, then you can participate in mcdvoice survey at the official website of www.mcdvoice.com. choose español or English. To begin the survey, you need to have Survey code. printed on a valid receipt or invoice is given to you. In the middle of the receipt, find a 26-digit survey code. How Can You Win, Buy One Get One Any Sandwich Offer ? participating in Mcdvoice customer survey on www.Mcdvoice.com within 7 days can earn rewards. if you do not have a 26-digit code printed on your receipt Click on the Hyperlink and enter : Store ID, KS : Date of Visit, Time of Visit, Order and Amount Spent.