Just finished the exam and wanted to share my quick thoughts.
What I did to prepare
* Read the entire Rita's , did all practice tests
* Completed 3 exams on the simulator, averaged 84%
Results
* Above target on all except Initiation (below target)
Before going into the exam, I felt that I was very well prepared. Once I started, I found the exam questions to be quite challenging compared to the simulator. I feel that the major difference is not in the content, but rather the way that questions were asked. The simulator uses very similar "language" across all mock exams. However, the actual exam simply felt foreign to me. If you encounter similar experience, don't be alarmed, if you truly understand the concepts, you'll do just fine.

Good luck!