So, on the Patio at the Tree House, if you needed to say, relieve some pressure, you could do so with careless abandon. The street noise would most likely cover you, and if not then it was still anyone’s guess where that trumpet had truly sounded off.
In the burbs? If a dog farts 3 yards down, everyone knows where that noise came from.
Cover blown.
Just Sayin’.
Reluctantly Suburban 
Okay, that was funny.
A similar thing happened when the smoking ban came….you could let loose all you wanted in the bar and for the most part, it would be masked.