By controlled race, I meant that it will be easier to keep track of racers on course and moving them off course will be much less time consuming and complicated.
There should be plenty of porta pottys on hand.
There wont be near as much law enforcement, due to the fact that they are not selling beer. There will be horse mounted security people.
Ok, so it is in a field, but aside from the trees, it's not much different than the forest.
As far as seating goes, There are bleachers this year, that would hold probably 300 people. If thats not good you can always bring a folding chair or two.