I've seen worse on a typical F&W festival Saturday, in my humble opinion. You'll always find people doing their Epcot thing on some level, but I don't think it's necessarily something to avoid for most ages. It's a super fun night, entertainment and good energy abound, and Disney does an incredible job with traffic flow and people management. If anything the sheer volume of people drowns out most bad behavior. I won't say it's all squeaky clean, but it's manageable.