I owned one and conveniently had an apartment above it in the past.

With that perspective I tried keeping it not too noisy. Speakers facing in a way to prevent noise pollution to the outside, less bass on everything too. Central speakers also get to be louder while speakers close to the windows are not as loud. It's not ideal but it's much better than being entirely careless.

The customers at least tend to not be noisy unless it's karaoke night. They have some common decency where I live.