Hold off on wrapping them for the time being. I've had a brief chat about it and what I'm trying to organise from their point of view is a list of ages and which is the best kid for what. With that, it's easier to wrap. Otherwise, we may just send it to them, they'll wrap and label it according to who they wish to give ti too.
Agreed on AusPost too, definitely something for next year. But I'd like to chip in half though as well.