Cafe De Paris
Paris had many appeals for the expats of the 1920s. It had a liberal atmosphere for artists and attracted painters, poets, and writers from all over the world. It was cheap to live there, it was an exciting, beautiful city and there was no prohibition on alcohol. In the US, Prohibition (1920-1933) was in full swing and people would go to extremes to get a drink - including moving to another country - if you could afford it.
This fact is believed to have been responsible for many of the Americans in the "lost generation" to decide to come to Paris.
In A Moveable Feast, cafe society was the important meeting ground for Hemingway and his artist friends to meet their contemporaries, discuss their work, and drink until their money ran out.