Sheppard Pratt Interview

Has anyone interviewed at Sheppard Pratt? I applied for a position there and interviewed with a recruiter. She asked all the basic questions, and it went well. I have a second interview with the unit manager tomorrow, and she said I will be spending a few hours on the unit and will interview with her afterward. The whole process will take about 4 hours. She didn't say exactly what I would be doing on the unit, so I'm a little nervous. Has anyone gone through this process? Any advice on what to expect? I appreciate all the help I can get!