We made it!!!! Thanks for all the advice and the clothing recommendations were spot-on. Skiing pants would def have been too much (although when we landed back home and the pilot announced -9 and snow I started to wish I had skiing pants for myself too!).
The activities went well, DH bough an Ipad just before we left so that helped a lot when DD was bored of all the little toys I had for her. It does turn her into an ipad monster though, so I am def limiting it to travel situations.
We were travelling by train the Sat after Christmas and got stuck in all that train-mess. A 3 hr journey from Newcastle to London ended up taking 6 hrs, omg. We ran out of food half way through but everyone was very nice and shared what they had. DD had chocolate cake and her first taste of crisps so she was over the moon. People were passing around whiskey and if DD hadn't been with me, I'd have had some too by the 5th hour on the train, lol.
All in all a great trip and I will def be doing it again
Thinking a mother-daughter Spain trip in the summer, to visit my friend.