Pros
You will learn to sink or swim - this is a pro in the sense you are learning a valuable skill in business. Your peers are smart, quick and very capable at their jobs so no worrying about the level of competency. The VP's and executives know what they are doing - it's a nice thing to be able to look up to your leaders.
Cons
When you are constantly working in "fire" mode, not only do you lose momentum and passion, but you also lose focus and the freedom of creativity. The company is a dinosaur in terms of where it should be in the B2B competitive space - you're having to teach what and why in addition to fire drills and deliverables. Employees don't feel that their work is valued or appreciated, and the turnover rate is high. Work / life balance is weak, and the stiff and old fashioned office culture is detrimental to your career contentment.