Spent a week at the Big White over xmas 2007.
During the week, the snow was great - amazing powder, but this was hampered by terrible visibility for 95% of our stay. It was only sunny for 2 hours over the whole week!
We stayed at Trappers Crossing which I would highly recommend to anyone. Flat Screen TVs, outside hot tub - brilliant.
A big dissapointment was the nightlife - the one pub on the mountain - Snowshoe Sam's is a hole, one of the worst bars I have ever been to. 95% of the crowd is Australian so you'll either love it or hate it.
And also the prices in the village supermarket are ridiculous - $7 bucks for a packet of tea! WTF? Do your shopping in Kelowna!