Do not wear blinders because the field changes constantly. Don't be afraid to get out of a small market. Experience different areas of the food industry. Explore all possibilities. Be willing to try anything until you are happy in your position.
School is great for the basics and traditional cooking methods, making things from scratch.
When you get in the real world, it is a combination of cooking from scratch and using prepared food such as frozen bread dough rather than making it all. There is nothing wrong with doing this, especially in a high volume establishment like a stadium. You need to be organized and have good time management skills. The more organized you are, the easier the job is and everything will run smoother. Don't fly by the seat of your pants because eventually you'll loose the pants and crash and burn.