This is a good plan, we've got tickets to the downs festival in Bristol with a ticket for the little one too, but we may go without him. But it could be a good idea to see if we are prepared or not although we wouldn't be camping so not sure if it would be an accurate reflection.
This is why I'm so keen to take him.
You always miss out on 99% of the festival anyway! Yes, this is the idea for going as a group, swap some childcare evenings as I'm not sure I'd want to take them anywhere overly busy anyway. I'm trying to go into it with my eyes as open as possible, I know it won't be the same as when I went in my 20s child free!