In the last few years, surveillance devices are being widely used, and any enclosed area is likely to be tapped using small spy cameras or voice recorders.
So increasingly people are using public places to meet people and discuss issues
Entry to gardens is usually regulated
So the lakeside is becoming very popular for meeting people
Since people are coming and going, no one is placing any tapping or spy devices. it is also outdoors, so gadgets will get damaged
Unlike coffee shops, there is no waiter or anyone harassing, people can spend any amount of time without spending any money.