Good luck, WillburgJ,
So far I think the advice you've gotten is pretty good, but here's a couple of tips I think helped me. For one thing, stock your room with a little basic food. For me it was cauliflower, broccoli, carrots, oranges, and some trail mix assortments. Sounds like rabbit food, I know, but the chow in the hotel where I stayed was a little heavy and you need to spend as much time awake and studying as possible. I awoke at 5:30 and hit the sack around 12:45.
Also, I would suggest a really early bedtime for the day before the test. It's so easy to be so sick and tired of this welding nonsense that you don't even care whether you pass or fail, you just want to be done and out of there. So be fresh so you'll care when you answer the questions. It's six hours of exams. Again, good luck.