Ok. this is the best advice you will ever get.
AS SOON AS YOU GET TO THE RACE, FIND A PORTA POTTY AND GET IN LINE!!
thats it. thats all you need to know!
OH! and no matter HOW tempted you are, no matter what everyone else is doing, do NOT DO NOT DO NOT start out faster than you are planning on being able to run...if anything, start off SLOWER than your anticipated pace.
EVERYONE is going to take off faster than they have business doing. You might get caught up in the excitement, and go along with it. BIG MISTAKE. if you start off too fast, no matter how easy it feels at the moemnt, you will pay for it before you are half-way done, making for a miserable last mile or 2, and a bad first experience!
Start off slow, and then by 2 miles in you will be passing all the idiots who took off at the start and are now huffing, puffing and struggling...
GOOD LUCK EVERYONE