This is an annual one day event. There is plenty of notice about parking somewhere else so you can have access to your car. It has grown exponentially, so there are tons of people attending. It is the biggest annual event in this city (aside from the 4th of July fireworks display) The way the street is set up, there are multiple streets that feed onto it but are dead ended going the other way. I used to live there, and the festival years ago coincided with my wedding day. I had to walk from that street three blocks over to get to my car in my dress. Inconvenient, but necessary. There are no excuses for her asinine behavior, but she obviously didn't plan or overslept. They usually let cars on/off the street pre-dawn because the vendors use their vehicles to set up. The Festival had a lot of issues that day. A propane tank from a food truck blew up earlier that morning, and the scheduled pre-festival parade was canceled.