Dropping off- expect queues
Picking up - expect to spend all day queuing
WiFI is terrible if you want to communicate use mobile texting but don’t expect swift answer because reception is very poor.
Encourage them to check in with you daily.
The campsite is divided into zones. I can’t remember the names but there are two that wage war every year. Your DD will know which they are and will hopefully avoid.
DS did 4 successive years. My late DSis lived in Cornwall so the first year ( he was 16) I was in easy driving distance. The following year the friend he was going with pulled out at the last minute. We had booked a cottage close to Newquay ( we know the area well) so DS attended in the evenings and crashed in a friends tent. I dropped him off at around 6pm each night and picked him up at around 7am each morning. Had no problem with traffic at these times. His last two years his friends and him drove down themselves. They left early Monday morning (4am) but still had to queue to get out.
When I say queue it can take 3-4 hours to travel from Newquay to the A30, this is usually a 15-20min journey.
When the boys went down last year they parked the car in Newquay in long stay and then waited until Monday evening before attempting to drive out of the town.
It looks like the weather is going to be good so I would plan a day on the beach in Newquay on the Monday with a huge picnic, they will be starving and then leave it till late to leave the area. It’s no fun sitting in a car all day in a traffic jam.
Failing that if you are travelling from South Wales consider chartering a large yacht and pick them up from the harbour😂.
With regard to safeguarding and safety it is a big worry. But hopefully your teenagers can be sensible. DS survived and didn’t manage to lose anything apart from a few items of clothing. He came home exhausted and with festival flu every year so make sure you have paracetamol. He avoided having anything stolen, but took the bare minimum. Last year they spent most of the daytime in Newquay in a friendly out of the way bar where the food was good and the beer cheap. They are private school boys and know how to behave when it suits them. It also meant that the locals they befriended kept an eye on their car. The weather wasn’t that brilliant so fun on the beach wasn’t as good as previous years.
They seem to have very little trouble considering the size of the festival. It’s not perfect but after 4 years I would be happier with Boardmasters than Reading/Leeds.