Stress
Oodles and oodles of stress.
You may think that this is a seemingly easy job, but you are unquestionably wrong. This job is extremely difficult because you're essentially upholding a certain image for a group of people who don't listen to you and probably don't care.
When freshman arrive at college, they're in a daze of freedom and insanity for at least three weeks. The recruitment process for sororities, most of the time, is in the first three weeks, so there's no time to weed out the "crazy" people from the "actually normal but crazy by circumstance" people.
This fact does not help you. Now you have to deal with absolute psychos who are destined to screw up so royally that they can't help but get their whole chapters in trouble. Their actions don't reflect well on Panhellenic or you. Good luck keeping your cool while trying to fix whatever mess has been made this time.