why dont you just wait until 1-2 months before time for your holiday and book with the knowledge that it correct.
or even better book few week before to make sure the snow is fine and thick .
less hastle and better choice as regards the snow conditions.
I know you will say cheaper-but is it worth booking well in advance and finding out that snow is rubbish.One holiday will have to go out of the window and the lesson will be learnt.