Ok here it is: Restaurants, if you are out of a certain soda, you should tell the customers when they buy the soda. They may be there to buy ONLY that soda. This happened to me yesterday (and happens all the time) at Chipotle, where there was also a line out the door. I had to decide between getting my money back, which would likely take forever since the cashier wouldn't know how to do that + there were 400 people in line, OR spending time with my best friends who I see only a couple times a year. I chose the latter. Duh.