[david927]

Don't worry, they'll already be fully bilingual by about seven. After that, it's a question of it they want to speak it or not, but they will already be bilingual.

If you live in Britain, make sure to back up the exposure to the Polish with films, books, trips to Poland, etc. (If you live in Poland, the opposite, obviously.) Your child needs to get the whole cultural experience, not just your wife speaking.

[mootothemax]

Thanks, that's really encouraging :)

Great point about culture; we're in Poland right now (that might change in a couple of years), and aim to continue visiting both countries for a long time yet. We'll be trying to mix and match as much as possible, so hopefully some from both cultures will rub off :)