If you serve 300 people on day one, people will get angry that their drinks are becoming room temperature. You'll have to battle the Starbucks line, and in doin

If you serve 300 people on day one, people will get angry that their drinks are becoming room temperature. You'll have to battle the Starbucks line, and in doing so end up doing larger batches of purchases, and finally the drinks will be cooling/warming too much before they are delivered.