Staff at CFRC Ottawa are awesome...been processed by them, interviewed by them, and worked with them...
As far as the testing and interview is concerned, Relax...Take it seriously, but not enough to stress you out...If you want to do this, you'll do fine. Be respectful when you get there. Dress nicely, yet comfortably, it gets pretty hot when you're in there for a while.
Follow Directions, pay attention to what the staff is saying, and you'll do fine.