My music festival would be based on rock bands, that were very popular in 2000's.
It would be in a big field with a river near it. In the August. Also there would be some farmers and beer sellers from breweries.
The main idea is music, so there must be bands. If band isn't alive now - I'd find alive musicians of this band and ask them to play some their old songs. Of course for money.
There must be AC/DC, Metallica, Rammstein, Gorrillaz and everyone elce. And also new bands, that sing in that times' stile are welcome. At the first of all it is concert for good memories and chance to show yourself on public.
Festival could continue for about a week, and there would be a campsite and some food courts.
At the moment there are some questions without answers:
1. What would I do with plastic trash?
2. How it would be payed?
3. And what about safety?
1. There would be only straws made of plastic and they would be thrown into special bins and taken away for processing. Everything else would be made by paper and burned by controlled open fire in the end.
2. I would find sponsors. Like these beer companies.
3. There would be medics, firefighters and policemen.