Pros
You can be done working at four. You get to meet many people on a daily basis. You can intimately know your entire staff and share their lives. You get to train, hire and fire employees. You get to order food and other products for your store. You learn to schedule. You learn how to run a business, which you should use to start your own business.
Cons
You have to work 50 hours a week. You will not be paid more if you go over. You have to get up at 5:30 a.m. to run your store. You can't have a social life past 9 PM. You will hear many idiots singing the "5 Dollar Footlong" song on a hourly basis. You have to deal with many idiots who don't understand the menus that corporate sends out every month. You get blamed for your food costs being so high yet your owners want you to sell pizzas for a $1 ($.08 loss per pizza, not to mention credit cards take a percent) which makes the food cost 9% higher. You get blamed for using too many people on the schedule yet if you don't, the store can't run. You have to get inspected on 200+ silly nitpicky things that corporate thinks is necessary to be a "model" subway. Some of these things don't even make sense to employees but only to your inspector. And missing 3 of them puts you out of compliance. Your inspector will tell you to "fix it" but will not have any suggestions as to how you can fix it. She will then tell you which page to turn to in a 3000 page operations manual, yet your store has limited space so the suggestions cannot be fixed without an addition to the building. Three months of being out of compliance puts your store in "arbitration," a method of determining if the inspector is bad, you're bad or your employees or owners are bad. Oh, and you have to maintain a happy, chipper working environment to "encourage" students to eat at three of your locations on the same school campus. And you get blamed for loss in sales yet your owners don't acknowledge the many new (10+) alternatives in food choices around the campus.