bluerain, I can't even do that as he will be spending the first half of Christmas with her and her family. I'll be picking him up at about 4pm for dinner with my family (which is at her uncles place). I don't plan on going inside when I go top pick up my son. I'll be calling her when I'm outside so she can bring him out.

Jstar, I have thought of that as well, I'd just need to find the right time and place as her family have no set routine, so it would be hard to co-ordinate.