In short, are you supposed to line-up with everyone else if you have already called ahead with your order?
Details: The local burger joint is set up such that there are 2 cashiers, 1 queue for both cashiers. There are NO signs to indicate 'Call-Ahead Pick up Here' or equivalent. I always call ahead because it takes about 15 minutes for them to prepare the food. And I always go line up with everyone else and wait my turn to pay and pickup. The reason being that they have not made a specific line for 'Call-Ahead'. If there is such a sign, I would go right up. Today, the line up was about 10 people long. I was at the front. A couple walked right up to the cashier. As the cashier opened, I went up and told the couple that I was next in line. They gave me a rather impolite reply, stating the fact that I am cutting in front of them because they called ahead and basically should be first in line whenever they show up.
Should I line up next time?