foreigners can also marry by Rathaus. But the process is same complex as that for German. So I have to marry in chinese consulat. It is simple, it is too simple in chinese consulat so that you can not feel that the marriage is holy. If I could choose now, I will perfer marry by rathaus with those complicated process. If you marry by rathaus in a small town (e.g. Pasing), they will provide you a wedding for free, it is with live music