Your experience sounds similar to mine, but I didn't find it to be as bad.
-Yes, I was tired, my day started at 8am and ended 10-1030pm (unless there was a big issue).
-I had my 4 year old with me, and she basically kept my hours (she needed to watch every kid come in my office). If there was a lull during HS meds, I would try to get her to sleep. She and I were exhausted (of course, she wouldn't admit to it!)
-Not too big on the supplies. Needed to go to the drugstore to get Ace bandages and refills on tylenol and cough drops (next yr I'll borrow from the hospital)
-I did have to send one kid to the ER via ambulance (asthma attack), the camp director followed behind in a camp vehicle, and another staff member went in the ambulance. I stayed behind, in case someone else needed me.
-I didn't find the routine meds to be a big deal, by the end of the week, I made it clear that they couldn't stroll in at any hour.

-Other than that, most of it was bull----. My this hurts, my that hurts, lots of homesickness. Everyone's throat hurted!! I went through cough drops like you wouldn't believe!! Some kids had a new complaint each day, or after each meal. And I guess the counselors don't discourage them from coming to me (they thought most of the kids complaints were legit- THEY WEREN'T!!).
-I took it all with a grain of salt- my daughter had a great time!! And I learned alot about the psychology of 'healthy' children, something I don't have experience with. They are very cute- and very dependent on adults, and most lack any decision making ability if mommy or daddy is not there. I did lots of mommying