Terrified of daughter going to festival

Don't double drop.

Is it the leeds festival?
My Grandson went last year.. and he's going this year ( just turned 19 and Aspergers).
They only go for one day and not an overnight.
It's hard not to worry.
We just say " we trust you.. please don't betray our trust".
Have fun and be safe.
Obviously we've had the talks of drink/ drugs etc.

But very likely she’ll run out of phone battery or switch it off to preserve battery, so don’t panic if you can’t see her. I assume she has fully consented to being tracked. She’s not a teen, she’s an adult!

Is it Reading/Leeds?
I’m volunteering at Reading; they have set a system of AIRHubs (assistance, information and response) which are based in the campsites and are there to provide support to young people (the demographic is very young), a place to chill, get help, or just have a quiet few moments. We also have lots of toilet paper!
On the one hand, a lot happens at festivals that really shocks me (I work in a school!), but Reading and Leeds have put a lot of effort into making the festivals as safe a possible and to make sure there are lots of people there to provide help if needed. I think the biggest thing that people under estimate is how exhausting festivals are; five days of not much sleep, rubbish food and lots of people all the time. The phone signal at Reading is good and there’s lots of charging points, so she should be able to keep in touch.
And tell her and her friends to use W3W to share meeting points!

Get her a water bottle she can refill, tell her to make back-up meeting plans with her friends in case they all lose phone signal, and make clear you trust her and that it’s her festival at her own pace that matters: if she wants to go to bed, no shame, go to bed! (I went to many festivals from age 15, I was fine as were all my friends.)

I went to Glastonbury when I was 18. First thing, do not let her know you’re worried. Expect no contact as phone signal usually awful, and phone battery limited. Keep yourself busy, and trust her. Sounds like she’s sensible but remind her of not taking drinks from strangers or leaving drinks unattended, drinking water and eating, don’t take anything she isn’t prepared to lose, and honestly, drugs will be around, so do talk about that rather than ignore it.