Successfully Used 300 Yuan at Da-Lian-Lian

My wife and little Amber went for vaccinations, so we didn't go on a trip today. Today, I went grocery shopping at Da-Lian-Lian and had dinner there. For dinner, I had beef noodles and stir-fried shredded pork with scallion pancakes. While waiting for little Amber to catch up, I was approached and thought it was a sales pitch, but a young lady wanted to treat little Amber to ice cream and gave us a free ice cream coupon. How can such a good thing happen?