Although we didn't go to champs this year, we had some interesting experiences at Utah.
While on the light rail going to the team social, me and a group of friends were sitting next to this man (maybe 40 years old) who had almost been sentenced for a felony in his Junior year of high school after already being convicted of arson some years before; his friends convinced him that armed robbery of a gas station was a good idea. The judge tried him as a minor (he was 17) and gave him a very short sentence in an effort to stop him from going to prison for 20+ years. He said he turned his life around by working to get his GED and studying to start his own business while serving his sentence. Now he's married with 2 kids that are going through college and runs his own successful company. We told him he should write a book about his experiences.
You definitely meet all kinds on public transit.