A manager acting clueless? What a surprise. When restaurants have busy days , they prepare for them in advance. Fast-food restaurants are well aware that certain holidays and the days around those holidays are going to be jam-packed. For example, it's not just Christmas Day that's busy. People are out doing their last-minute shopping for a few days beforehand, and they might decide on a quick meal on their way home. In order to be prepared for that influx of people, restaurants need to have ext…