I have to deal with a pack of kids when I practice by myself. There is this one awesome court in our neighborhood. Recently resurfaced, some shade in one corner, backboard, just a single fenced court. Ideal for solo practice. Trouble is, there is a kiddie park next door.
When I arrive, there are usually pre-schoolers on the court running around, sitting, or pushing Tonka trucks. I just take the court and start unpacking my stuff. Usually the caretakers will come and get their little charges.
And sometimes not. So I stand there, hands on hips, waiting. If this doesn't attract the attention of the caretaker, then I start negotiating on a loud voice. "OK, I'm going to play tennis now. Do you guys want to watch? How about you go over to that tree on the other side of the fence?" Even this sometimes doesn't bring a caretaker response, so then I just have to wait (or I will bribe the kid to leave by giving them a tennis ball with their age on it).
I have also had toddlers burst onto the court in mid-swing and refuse to leave, insisting on picking up my balls. Who is watching these kids, anyway?
And just think. In a decade they will be trying to take pictures of my butt under my skirt.