I was going thru the same thing. Trust me, 4 hours will pass-off like 1 hour. you will not know the way time flies in the test room. One advice " keep yourself calm".
Once you have done the AWA, forget about AWA, even during the break. It is quite natural to think about thos fine tips, words, that you should have used in the AWA, but it does not help. Instead, have a glass of water, take a choco bite..avoid chewing gums, they give headache after sometime
Then in the Math, FOCUS, FOCUS, FOCUS. I cannot over emphasize about the first 10 to 15 questions. Double check them (u may catch few silly mistakes and correct them). The rest of the question will be a breeze fr you. FOCUS on one question at a time. Then again, during the break, do not think of the Math question .. was that question wrong, will I get a 50 score .. naaa, this does not help at all. Instead, have a glass of water again, bite a choco ..... and avoid chewing gum
For Verbal, again FOCUS. The 10 to 15 questions also stands good here. You may get 2 RC in the first 15, so read good, moderate speed, and focus. Not giving too much time for the first, so that it makes u panic the rest ... naaaa, all to togther keep cool. RC - Active reading is the only thing helps. If you have done bad in one of the CR or SC, do not think about it (it is hard, but thats how it goes with gmat).
I guess with these tips and from the others, I can forsee that you score has already touched 700 ..... Good luck. I wish the best.
Note : I would love to give the hammer I have in this picture, so that you can BONK the gmat.
Giving another SHOT