When they're just 18 months old, it can be difficult to get them to keep still. Throw into the mix that its a trip outdoors with carol singers nearby and a visit to Santa Clause is imminent and you've no chance. This means things like choice of shutter speed are kinda out of your hands.
Anyway Finn decided to keep still for a couple of seconds, and I got this (There's about 5 blurry ones in this set!)