Making sure festivals are accessible isn't just about having enough disabled toilets - there's a lot that has to be considered. So when X user Jas posted to say she had been denied access to a space for neurodivergent people at BBC Radio 1's Big Weekend in Sunderland last month, it raised questions about how those with conditions such as autism, ADHD, dyslexia and dyspraxia are accommodated at big events. "Not all disabilities are visible," Jas wrote - showing the difficulties that occur when