Here is a little more information about the Sensory Calm Spaces, https://www.glastonburyfestivals.co.uk/information/access-information/sensory-calm-space/ as mentioned by @woyski above. I would suggest you contact accessibility@glastonburyfestivals.co.uk for more information about them. 😊
Popped my 3 man fresh & black pop up tent in the garden today to check it was all good and to see if me and MrPipine and all our stuff will fit in it as we haven’t done a camping trip or Glastonbury together in it yet. Seemed like it would work, I might regret not having a bigger tent if it’s a wet year.. it does have a porch at least.
As someone diagnosed with autism this year, I loved seeing this thread! I know she may well want focus as some others have provided great suggestions, but for maybe when the mental stimulation goes in the other direction, Diverse UK will be there with sensory tent/s - I've not used them before but plan to this year if I need it.