Translation of advocacy in German

So she and I went to the food store to buy some lunch. However, the store had almost no food and one could pay in local currency or in US dollars. One could really see the country's poor economy.
The climb was much exhausting than I had presumed. I had forgotten that we were at high altitude where there is less oxygen and that every step required double effort. It was a great exercise.
I had imagined my first dinner to be a little different, but I was already here and wanted to make the best out of it. So i ate there and return to my hostel at around ten o'clock at night.