We have noise complaint laws, sure. They're different depending on the jurisdiction, of course, but they exist.
And as for the security guards, it doesn't sound like they're protecting public property. Depending on the laws in that area publicly accessible does not imply that people are allowed there, just that they can easily get there.
And as for the security guards, it doesn't sound like they're protecting public property. Depending on the laws in that area publicly accessible does not imply that people are allowed there, just that they can easily get there.