I think I can offer some advice. I finshed my MBA about a year and a half ago. In terms of getting prepared, I think the most important thing is to make sure that you're getting a degree in an area that you really want to work in. I orginally considered getting a Ph.D. in Psychology and after wasted application and test fees, I took a year off and went for the MBA.
Preparation: I think that GRE/GMAT test preparation is really important, I found the classes to be helpful.
Program Type: Decide what type of program do you need, a working evening program or do you prefer to continue as a full-time day student. I opted for the evening program, housing cost in the Bay Area require me to work. But, if I had to do it again, I would have chosen the more traditional route.
Using the Degree: I want to work in Human Resources Management. Unfortunately, I keep being told that I'm not "seasoned" enough.
Current Job: Totally unrelated to Management or Human Resources, I'm a Project Coordinator for an area hospital.
Location of Grad School: California State University, small, commuter school. Nothing at all like my Alma Mater in Illinois.
Last Word: Be careful with concurrent degrees, especially if one of them is Law, it's really tough and you have to be SUPER committed to make it work. Best of luck to you!