I am bilingual so is my dh. Our children however are not. They have lived in 3 different countries in the past 5 years where neither of the languages we speak was the national language.
We decided with ds1 that it was more important for him to learn English as a first language because at the time we were in germany and he was hearing german outside so our other language was sidelined.
With frequent moves this continued. Both ds1 who is now 5 and ds2 who is 3 speak fluent english for their age and bits and bobs of the languages of the countires we lived in.
They also have a very basic understanding of our second language but will not answer in it even if I say something they always respond in English.
Having Dh speak one of the languages is not an option as he doesnot spend any significant amount of time with the dcs and is often travelling.
Sorry for the long post I guess what I am asking is that has anyone sucessfully introduced another language to a child at this age without them actually living in that country.