Hey Canadian friends (and non-Canadians who have been there!) we are going to Ottawa and Montreal for a few week in mid Decmber and I have a few questions...

What are fun things to do in Ottawa? I'll be mostly alone there with DS (21 mos.)

What's the best way to travel between the two cities? Train?

Where's the best area of town to stay in Montreal? What's fun to do there? DH will be free to go with us here.

How cold will it be?? Do I need to buy DS like a snow suit??

Thanks so much for any advice you can give me! DH will be attending a conference in Ottawa so we are staying at the Fairmont downtown while there.