Pros
You will learn a LOT, because at Capstrat it's sink or swim. Be prepared to work hard, harder than you've ever worked before (just don't expect to be fairly compensated for it). If you're young, Capstrat is a great place to get some experience and build up your resume. The agency is well-known and well-respected in the RDU area and experience there can help land you that next, better gig.
Cons
Capstrat is known for paying the absolute rock-bottom-est salary in the biz. Don't expect to make much money unless you are very high on the totem pole. (This is one of the reasons why the average age of employees continues to go down. It's like a college campus over there these days.) At the same time, expectations are sky-high. "Push and be pushed" is a company mantra you'll hear, and it basically means you are never good enough, no matter how hard you try. Your self esteem will take a huge hit. It wasn't until I took a job at another company that I truly began to realize I DO have talent, and it IS appreciated.