Using Miles for flights with baby

Hi,
In the past I have spent my Virgin miles on rewards flights in UC with my wife which has been an amazing experience.
The good news is that we are pregnant, and I was wondering if it is worthwhile to continue saving VA miles. How easy is it to book a reward flight which includes a baby under 2? Is it even possible.
Obviously I wouldn't fly with such a young child in UC. It wouldn't be fair on the other passengers (I could just imagine the looks) but perhaps PE? What are your thoughts?
Thanks as always.
In the past I have spent my Virgin miles on rewards flights in UC with my wife which has been an amazing experience.
The good news is that we are pregnant, and I was wondering if it is worthwhile to continue saving VA miles. How easy is it to book a reward flight which includes a baby under 2? Is it even possible.
Obviously I wouldn't fly with such a young child in UC. It wouldn't be fair on the other passengers (I could just imagine the looks) but perhaps PE? What are your thoughts?
Thanks as always.