Pros
Burger King was a great part-time job while in school because my boss is flexible with hours. She understands that I can't work very much during school. But I could get all the hours I needed / wanted when I don't have school (summer / Christmas). I started as a Front-counter specialist, after I got comfortable with that, they started putting me on the Drive-thru. I asked to learn the kitchen, and they trained me for it. I then became an official: "Jack of all Trades" which let me get more hours, because I don't have a defined role, I can do what ever they need me to do.
Cons
Like most fast-food type jobs it does not pay well. There are not a whole lot of opportunities for promotions unless you can become an Hourly Shift Coordinator. It can get stressful, because there is pressure from the corporate level to meet goals like drive-thru times, and many customers do not care about that, and some of them can be rude.