Has anyone been to Tribfest?

[headlesshorseman]

just realised I put this in the wrong topic.
We are thinking of taking dcs who will be 9 and 6 to Tribfest in Yorkshire this year.
Has anyone else been?
I've been to many a festival myself pre-dcs but have yet to be brave enough to take them, and DP worries that we might lose one.
Shall most likely be taking my campervan instead of a tent, at least first time.

Also, any festival advice with dcs would be very welcome!