I play in the alumni band. You can't see me in the picture, but I promise I'm there somewhere. We make the kids stand off to the side because the group is rather loud.
It's always a family and pet friendly event. My kids met this dog (we didn't actually know the owners). They ask for permission to pet and then spent a long time petting and hugging the sweet dog.
Some of the kind drummers let my kids play.
I let the kids pick any shirt in the school colors. They grow too fast for me to buy them the licensed school clothes.