Oh! Test tips:
If you don't know an answer, skip it and come back. it's better to answer as many questions as possible. Just make *sure* you've skipped the appropriate number on the bubble sheet.
Use a slightly dull pencil. Takes less time to fill in bubbles.
Make sure to bring good snacks, and eat during breaks. Hiking food is good: fruit, trail mix, stuff like that. Nothing particularly loud or messy.
Don't just pack it: wear your jacket.
Wait, I think that last one is boat safety, not taking the SATs...