Pros
It feels like a real job for a while. Management pretends to help you work on a personal development plan. You are required to set goals for yourself in a job you just started in and know very little about. There's a cafeteria on site. Believe me, though the food isn't great, you'll need to learn how to eat there or bring your own food. Your 30 minute lunch(minus the 5 minutes*2=10 minutes it takes to enter and exit the building) won't allow you to make it for or actually humanely consume anything reasonably resembling food elsewhere.
Cons
They're regularly fussing with you about everything. Don't do this, don't do that. I felt 2 all over again. The difference is I'm a grown man with multiple degrees who acts my age. Everything I did was an attempt to be a good employee and you can bet I was berated at every turn. So, in essence met was like a giant preschool where we were actually handling giant transactions for real people in the real world. It was such a nightmare.