No one in Denmark would ever ask to take the leftovers home with them, when eating out. If I asked the waiter in a restaurant for a "doggie bag", I would for sure get some strange looks.
This American custom is not implemented here, which I think, is a great shame. A shame in so many ways. Often, when we can not eat our food up, what is wrong with taking it with us home? I remember, when I lived in North Carolina, often the leftovers from an evening out would taste even better the day after. Furthermore, they would come to good use, instead of ending up in the trash. And that appeals to me even more.
A couple of weeks ago there was a debate about this on the Danish radio (and has been described in newspapers as well), where different people were asked if they would consider asking for the leftovers to take home after eating out. They all were very surprised and said no, some even thought it was quiet strange. The waiters and the owners of the restaurants on the other hand found the idea quiet pleasing. Perhaps next time I eat out here I will ask the waiter for a "doggie bag". Maybe I will start a useful trend.