The trip is March 14-21st which is my kids spring break.
By that time of year there is no snowmobile or snow coach tours to Old Faithful. That's all done a week or two earlier. Yellowstone has very little winter info on their website. The snow lodge is also closed by then. We'd be limited to Mammoth Hot Springs. We don't have a lot of interest in driving to cooke city.
I've talked to the wife and she wants to ski 3-4 days total, but with an off day in there. She thinks 4 days straight is just too much, I agree. She'd be fine with 3 days total even.
Nordic skiing is a great idea. My wife has been dying to try it and this would be about the perfect place. Big Sky has a ton of trials and it's relatively cheap as well.
The deal we're looking at for Big Sky is basically a 3 night stay where you get 2 days of skiing for all four of us included. Runs about $500 per night total. You sleep in the condo the night before your first day skiing at the night after your second day skiing.
Here's what we're thinking at this point:
Friday: Drive to Fargo
Saturday: Drive to Billings
Sunday: Ski Red Lodge (if decent snow) (would likely stay in Red Lodge)
Sunday: Chico Hot Spring/Mamoth Hot Springs and stay in Gardiner right near both (easy drive from Red Lodge)
Monday: Explore Bozeman and get to Big Sky (can't check into Condo until 5:00) Could possible X-country ski this day for a few hours
Tuesday: Ski Big Sky
Wednesday: Ski Big Sky
Thursday: We need to check out of our condo by around noon... Possibly ski again this day?
Friday: Start driving home