I appreciate all your advice. Yes, train travel is still possible from NY to Quebec but the Amtrak is very slow going to Montreal, and there you must change to a Canadian train to Quebec.
We don't prefer to drive, especially during the "holidays" and we thought the train trip from montreal to quebec city could be scenic and lovely that time of year (november).
I'm considering flying NYC to Montreal, taking the train to Quebec City in both directions. Not that expensive, and getting there is half the fun (well, not the flying part!). We also might layover the first night in Montreal, have dinner and walk the old town, then leave for quebec and spend two nights there.
Do people think Quebec will be hopping that time of year? It's not a canadian holiday weekend, after all. Since it's an American holiday, I'd prefer to keep my flights direct and not risk any layovers.
Let me know if you guys think this is an unsound plan in any way.