Pros
1. Good for your resume. 2. You learn quickly because you have to, or you'll be on secret probation. 3. You quickly seek out like-minded people who you quickly befriend solely based on the hubris of middle-management.
Cons
These "Cons" apply specifically to the Information Technology Department (ITD) 1. Middle-management ruins quality workers. I cannot stress this enough. Middle-management needs to be taken out of the corporate structure because a ton of layers of work is already expected just to get the job done. 2. Had it not been for my immediate 2 middle-managers, one for Production Support, and one for Projects (both of which I had to report to multiple times per day), I might still be at the company today. 3. Training was completely OTJ, and there was never any budget for eternal classroom (or even online) SAP training. 4. If you don't drink the Kool-aid, you're immediately an outcast. This happened to me around the end of my first year working there. 5. ITD has / had some amazingly talented Functional and Technical employees, but unfortunately the middle-management were successful in driving most away claiming that "they just didn't fit in with the culture" 6.