I read it years ago, and would like to read it again. I think it may have been by Isaac Asimov but I'm not sure. A group of people were having a dinner party but something happened and their home was transported through time/space so that when they opened the door they were in an inhospitable alien landscape. The lead male character takes a very practical view, starts to organise everyone by collating food supplies, books, fuel etc. The wife goes completely to pieces and hits the gin 
There are younger guests who I think are friends of their teenage son.
Does it ring any bells with anyone? It's driving me round the bend trying to think what it's called 