I took my dog to Towersey, I won't again.
I am (I hope) a responsible dog owner, I wouldn't dream of taking my dog into a concert, or even the beer tent. He was on a lead all weekend, including when sleeping and on a stake out so he couldn't come out of our tent area. I exercised him several times a day away from the festival site. But he didn't enjoy it, and a lot was to do with other dog owners, dogs off lead running into our camping area.
I will be sorry if dogs are banned, mainly for some folk I see year after year with happy well controlled dogs, but it is a family festival.
Again, a small minority of dog owners spoiling it for the majority. Unthinkable not to pick up dog mess, and unexcusable to let a dog off a lead in such a situation.