We were at Epcot in our first trip with our kids in 2014. We didn’t really know what F&W was. We went to Epcot during the week and it was awesome! We went back on a Saturday night and had to get out of dodge. There were so many 21st birthdays, bachelor, and bachelorette parties that were super rowdy, throwing up, cursing, staggering into things- you name it.
While I’m totally not against a night of debauchery, I prefer not to have my 2 and 4 year old witness that kind of behavior for many many many years. I felt like there should have been some sort of warning. Luckily, MK was a nice place to retreat to
We had very similar experiences...It's completely out of hand at Epcot at various times of the day/week.
We stopped going to Disney in the Fall for a number of reasons, crowds and prices being the main thing, but one of them was F&W wasn't "safe" for our kids to be around later in the day or weekends. We had to end up going on a early afternoon mid-week to avoid too much drunkeness and foul language. We complained multiple times and it we got lip service.
My advice to parents who care about this type of stuff is stay away from Epcot at night or weekends during F&W.