Pros
It's a great place to be from. The firm appears to really (truly) care about delivering quality work to clients. There are some smart cats there. Good job security (you need to be a complete idiot to lose your job). When you turn your LinkedIn button on, recruiters will smash you with offers offering higher pay and significantly better work-life balance.
Cons
Honestly, auditing sucks. You will spend countless hours with your butt in a chair ticking and tying. What you studied in college was far more interesting than auditing. You will get weird looks for having the gall to take a breather. You will get treated like a child. Told when you can go to lunch, when you can go home etc... You will likely get hit with a soul crushing workload. Then you will get pulled off of whatever menial task you're working on and told to jump on something else. Rinse and repeat all day. That quality work I mentioned above will come at the expense of your evening and weekend life. You will drive several hours to count boxes at a warehouse in the middle of nowhere, and be asked to log in that night at the hotel to help out on your current engagement. You will be asked to sacrifice many weekends; "Oh just log in from home, that is OK!" Do not make plans, you are at the complete mercy of your engagement team. During campus recruiting, you will be told you will work "normal" hours with the exception of season. This is a lie. You have interim, quarterly, and a myriad of other reasons for the team to panic and rack up billable hours. This will occur at the drop of a hat too; even when Grandma flew into visit. Everything is treated like it is the most important business task in the world. Despite all of the warnings you read on the internet, you will drink the koolaid during recruiting and accept the offer.