Shipping out for Army basic training In 8 Hours.?

Yay! I'm not sure if I should be excited or scared shitless. In 8 hours and counting, I will be on a bus headed for the hotel. Sleep till 3 am then go to MEPS. What exactly will I be doing at MEPS Wednesday. Do I have to do another physical and stuff or do I just get on my plane and fly to Fort Benning. Damn I'm so excited. Please any last tips for Basic or anything that would be good for me to hear or to at least calm me down a little. Thanks, Im just really scared.