Thank you so much for these prompt replies, it has been really helpful.
I'm looking forward to digging deep into the system. It seems well suited to solo play. Particularly in the way that the traits and passions define a character and guides their actions when you are not sure what to do, and in the amazing number of story seeds and NPCs that the system throws up simply through things like the family tree and the winter phase. I am using the Mythic GM emulator for the adventures that emerge through play.
I am guessing that, when it comes to group play a smaller number of players (2-3) is ideal? I can imagine that the bookkeeping side of things could get pretty monstrous with large tables.
Thanks again
Bill