We are travelling to the US in May with nearly two year old twins...do you think if we don't pay for seats for the kids we might end up getting them anyway? I've heard this often happens...it would cost us £500 more to buy seats for them, seems silly if we might end up with them anyway. But terrified of us having to actually spend a whole flight with them on our laps. It's American airlines, to a not very busy destination, so don't think plane will be full...does anyone have any advice? I bet you are all glad you're not me! Thanks a lot