I'm not really worried about the curriculum or the pace of life at school, I'm sure it will be difficult, but I'm sure I'll adapt.
What I'm worried about is when I return to the workforce in a role that will likely be much senior to the one I am in now.
In other words, assuming all goes well and I land a good job where I have direct reports, how do I have any credibility in the eyes of these people when they will have company-specific knowledge of the company and I'll just be the "MBA" that shows up.
The work I do in my current role is very specific to the industry and company that I work for. I can't imagine how anyone from outside the industry or company could possibly take over my manager's or director's position. I know not every industry is like this, but I still imagine if I move into consulting or corporate finance or whatever, any people that are working under me are going to seem much more qualified and knowledgeable (at least at first). I mean it will be great that I will have taken classes on financial accounting, ethics, organizational behavior, supply chain management, etc... but really how much of those skill-sets are really going to help me assimilate to whichever company I end up at?
I realize there are plenty of valuable things that I will learn through all the group-work etc. but still I think about what it will be like starting at a new company in a new industry after school and it just seems like it will be difficult to hit the ground running.