Is this normal behavior for kids when visiting others?

I recently babysat for a family I know fairly well, but it was my first time watching their kids. I don’t have children myself, so I’m not sure if their behavior was normal.

The kids, aged 7 and 9, were jumping on the sofa, running into my bedroom—which I consider a private space—running around while eating, and even asking me to go buy candy for them. I did set boundaries, and they listened when I enforced them, but shouldn’t kids this age already know better?

I’m especially curious if this kind of behavior is typical when they’re visiting someone else’s home. Without limits, they would have been running wild the whole time. Is this normal, or should I be concerned?