Volunteering! Usually good....not so good today!

S0... my work wanted volunteers to sign up to work this local health fair today, a Saturday, my typical day off, however I am a sucker for volunteering and said "yes"! So I woke up early, today, put on my khakis and white tee as required and headed to the volunteering spot! I was told many people from my work would be there, and it would require me to work at the "future doctors and nurses" table which meant playing with kids, and this sounded good to me!! However, when I got there, there was not a soul that I knew (no one from my work came), it was pure chaos, and they put me at this table with no chairs to calculate peoples BMI (body, mass, index). Well let me tell you, who knew people in the Midwest LOVE to get there BMI checked, I mean LOVE it!! My table was by far the most popular with a long line, people were cutting in line to get there Body fat checked and some of them were SO rude! I am not kidding, I would start to do someones, and I would hear this voice,.. "um excuse me, I was here first, I WILL get my BMI done first." I was thinking, "what?", "this is a free event?" I am usually a huge believer in volunteering and helping out however today my experience was bad news!! I will not be volunteering at that event ever again, the search is one for a better way to make a difference!