How long it took them to respond: Four days (full disclosure: I live near Chipotle's HQ)
What I got in the mail: A free bowl/burrito card, a letter, and a handwritten envelope
Was it worth the time to write them a letter? C'mon, this is free Chipotle we're talking about. Obviously it's worth it. I can get a bowl with extra guac, rice, meat, and cheese and it'll be hella free. I also love that someone physically wrote my name on an envelope! For a second, I thought of Chipotle as a mom-and-pop burrito shop and not a multibillion-dollar company.
How long it took them to respond: 20 days
What I got in the mail: Coupon for $1.25 off any Kellogg's product, a letter
Was it worth the time to write them a letter? If you're an extreme couponer, you should definitely write them. Do it, Grandma!