Why Estonians invite strangers into their back gardens each summer

> Can't imagine the food safety institutions even considering pop-up home cafes in my native Belgium.

Many states in the US have "cottage food" laws that allow low-risk foods (think baked goods, jams, jellies, candies, nuts, etc) to be labeled "this is an unregulated unlicensed cottage food product" and sold without a license. Belgium may have something similar.

I attended a Sukkot, druing which the host jokingly called the tent a "Jew Fort" and they had some lovely food and burned some herbs and overall had a great time. I really like the religious festivals that integrate more people. Like Holi, where I got to throw a lot of colored sand or something at people and eat good food. I feel like events like that really help integrate communities.

Not Estonian, but a Swedish fellow I knew always had a summer event with lawn darts and other odd games and food each summer