Buzz,
As you do each frame, you should make sure that you do "know it like the back of your hand". Of course, as you progress through the module, you'll forget all of the earlier stuff - but that's not a problem as long as you knew it all once. A bit of revision before you go won't hurt, but isn't strictly necessary.
The whole aim of the brush-up is revision. They don't expect you to be able to remember anything when you turn up. They will then go through the entire course in 2 weeks - far too fast to learn anything which you skipped over as you worked through the frames, but just right to make sure that you remember it all when you go into the exam hall.
Like M.A. I did all my exams with Bristol. The instructors are fantastic, the feedback is superb. He is absolutely right about working into the small hours, especially for Module 1, but if you can consistently get good marks in their feedback, then you won't have anything to worry about in the exams.
Good luck!
FFF
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