What Could Possibly Go Wrong At A Festival?

Okay, festival-going folks, I need to collect potential incidents for the Sebastian novella. What are the weirdest, most high-stakes, most improbable, most hilarious and/or most dangerous things you’ve seen happen at a festival? What interesting disasters have you seen averted, or had a hand in averting? Please don’t use names or identifying details, because I don’t want to be party to accidentally upsetting, embarrassing, or libeling anyone. I just need some ingredients to zizz together in the Cuisinart of my fictioneering brain so I can make some story pesto. If in doubt, please respond privately.