I'd thought it an impossible task to put on a good food based festival for a long time but Gilroy did a pretty good job with their Garlic festival. The trick seemed to be have about 5 stalls for every vendor and stick them in opposite edges so if the line is long at the Garlic Ice Cream booth you just keep walking around the edge a bit to the next booth from the same company selling the same stuff.
I've seen some pretty epic failures, especially if they do good early on and get too much exposure. There was a garlic festival in the Hudson Valley that got way too much exposure on Food Network and was turned into an overcrowded nightmare. (Amplified by the number of Manhattanitrs out of their native environment)
Another one was a food truck festival where they spread the thing out too wide, so you had to be on a death march to actually see everything!
Yeah, this seems to be getting more common (maybe because the people running the festivals make a nice profit?).
I was at a hot wings festival recently. In a two-hour line for 4 wings. Then they ran out of wings, beer, and all liquids, including water. It ended up being ~$10/wing, 1 wing/hour.
Sidewalk Film Festival
Sloss Fest
Brew Fest
Slice Fest
Secret Stages
I'm not sure if it is the local support or that they're just smaller. I expect we may have had a lot of excellent event organizers with solid experience looking for new jobs after City Stages wound down. City Stages was a 20+ year music festival that was generally successful logistically, but wasn't profitable.
When you think of it, though. If there are 5+ 10-20k attendance festivals every year in every metro area over 500k there are bound to be some regular screwups.
And port-o-potties always suck.
OktoberFest London 2015 http://www.telegraph.co.uk/news/shopping-and-consumer-news/1...
Jabberwocky (I had tickets to this) http://www.nme.com/news/music/various-artists-2392-1244501
I remember at least another one which was cancelled on the day due to overcrowding which I can't seem to find right now.
http://www.tampabay.com/things-to-do/food/spirits/cigar-city...
To be fair to Cigar City, they learned their lesson and as far as I've heard, subsequent festivals were great.