Seriously, anything you might want or need for the festival will be on sale somewhere, albeit at a price.
The traders at the festivals are there to make money; for some of them this is the time that they make the money they need for the rest of the year.
So support the traders and do some shopping! But, be careful.
Things tend to be overpriced at the beginning of the festival, so if you’re shopping for non-essentials then leaving it until the last day could save you a fortune. Don’t be afraid to haggle either.
It’s not very British to haggle but most of the traders will enjoy the banter and you may even get some money off.
And don’t forget that whatever you buy you will need to get it home, so think before parting with your cash.