Wow j you got me stressed out and I still have a few weeks. Good I'm working on the tasting part tonight. Let us know your impressions once you recover from 3 hrs of writing about beer.
Back--my right hand is able to type again. Took the day off to rest it, hahaha. All I can say is, really, it depends what you want to get out of it. For me, it was mostly about seeing if the brain functions anymore in a studying capacity after about 20 years of 'not having to study for anything'. Answer: it doesn't.
I think I may have passed (with a 60) IF I had completed the exam. I did not. Poor time management bit me and I had unanswered questions. Cardinal sin.
Also, I had another issue with the exam but won't get into it here because it is more local than anything.
I will tell you: know your styles. Other guys were making flash cards of styles with commercial examples and stats (you know, once you 'get to know' / memorize all the INFORMATION) these were for bonus points.
If you've done any online homework at all / seen any other study guides I don't think I'm giving anything away by saying there is a RECIPE question on the exam. It is up 'quite early' in the exam (of course nobody says you have to answer in order--I didn't.). Use that opportunity (after reading the whole exam first, so as not to repeat yourself if other technical questions refer to certain things) to explain everything you know about the process.
BUT----time management is your FRIEND and ALLY. I didn't use my watch properly and paid for it. But that's fine, I'll just re-write as soon as I can. Like a driver's exam--take it a couple times if you need to (or five if you're like a friend of mine....).
Writing for three hours was the worst part. Physically. The most I've handwritten anything in the past 18 years is pretty much addressing envelopes and signing things. And I now have the 'beer blister' to prove it. Get your hand in shape if you're not used to writing. But don't do what I did and try to write as many answers as you can in the week leading up, leaving you with a blister you have to wrap so it doesn't aggravate DURING the exam. Heh.
Know as much of the technical information as you can, and those pesky 73 styles. Because they COULD come up in any order... Compare this and that and this. And beware the actual tastings / judging sheets. They come around and definitely mess with your 'thought / flow' on what you were just answering.
I've heard guys say to give 10-12 minutes per question. I did not and paid the price. Having to hurt my hand again at the next opportunity. But I definitely want to write when it is still fresh, again, so I don't have to go through this again for a long time if I ever get the gumption to get something higher-marked.
That said, see you all at the National level.
A guy I wrote with does not have a local brewing club or anyone he could really work with, he just read the materials and took his knowledge as best he could---without the weekly samplings we were doing (which helps a lot---using sense memory for certain styles is great, especially if you're an IPA lover and happen to get one on your exam to judge---of course they're all random so that's just an example).
Read the 'instruction sheet' before you begin. When it says "don't be verbose"--they mean it. Give the answers you need to get the marks and move on. GET THROUGH THE EXAM. If you really feel you need to go back and make additions, fine. But get through the exam. When the beers come out to judge--it messes with your plans, that's for sure. Take a watch and use it.
And I made it through without peeing---I was proud of myself. Others did not. But they also made a stretch break out of it. I did not.
And remember, it's only homebrew. So relax.

after you write, of course.
It's a hobby--take it as seriously as you take the hobby in general and that will get you through. I was definitely stressing because I've never failed an exam before, personally, and didn't want this to be my first but it very very likely is and I'm cool with that. I took the class for the experience and knowledge--I had no ideals of even writing to begin with--and am way farther ahead than when I started and it is a great stepping stone for further knowledge to add on to it.
Now off to bed to dream about things like preoteolytic enzymes, Calcium, and Rauchbiers.
(again, all randomly-mentioned examples and not in any way saying what was on my exam)
Good luck, folks!
J