Recently I visited Chick-fil-A. They allow their customers to give feedback if they have visited any outlet in the near past. https://www.mycfavisit.blog/ is the official website where the survey is taken from the customers. Not only this but to encourage the customers to participate in this, they also offer a free sandwich just by spending a few minutes answering a few simple questions.
More Links:
mycfavisit.blog 
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