Good programmers need good food. The first evening we went to a turkish, nearby restaurant, and the second evening I took my guests to Oldenburg's city center, where we ate in the 'Markt 4' (they do quite good Hamburgers etc.). Unfortunately, every year in summer there is something called 'culture summer' in Oldenburg's center, and this was one of those nights, with the streets crowded with people. This also meant a lot of traffic in the restaurant, and the waiter had a real hard time following our requests.