Translation of isolationism in German

One hour later people were starting to leave and we did not exactly understand why. We took another drink and I paid the bar man cash. Later it turned out that the change he gave me would be fake money.
The best place to eat for us was the Tamarin cafe. The atmosphere was really a backpackers atmosphere, but with style. People were sitting there with laptops and and travel guide books.
We had decided to fly to Lima (instead of Buenos Aires, Argentina) and to visit Machu Picchu just a few weeks before leaving Europe.