although just like in COD, you will never run for more than 7 seconds

(well for me any way, i'm fat lol)
Always keep your eyes forward as well, the amount of times Ive seen people close-line them self's on tree branches because they were looking at their feet or something is unreal.
some gatorade/powerade or ration pack isotonic mix drink is always good to have, its better than water and it tastes nice.
Site food is Ok, but I always take my own any way, just makes the day cheaper (when you pay rent and petrol, the cheaper you can make something the better)
But the main thing is to just enjoy your self dude, Hope it goes well for you.