Interview scheduled - now What?!?

I finally have an interview scheduled, and I've done the research on the typical questions (thanks for the stickies!!!) But, this hospital is going to have me walk around the floor with another nurse - not delivering patient care, but I am trying to anticipate how that may go. This is a 30-bed med-surg unit, with a good mix of patients. More critical cardiac, neuro, etc are sent to another hospital an hour away. There are some chemo and dialysis certified nurses that work there as well. Any ideas?
p.s. I graduated in May, I have my license (yay!), and I am scheduled for ACLS in September. And I am extremely NERVOUS...