Sno*Drift is a lot of fun. I went last year with my brother and had a blast.
Last year the Fishlab spectator area was awesome! People had bonfires going and it was a really neat experience. Almost like a beach party, but with snow, snomobile suits, and rally cars....he, he, he...
Take some time and go to Lewiston and walk around the service area.
Really the only thing your paying for on the special stage is the bus ride to the gravel pit. I think there was a parking fee at the pit, but it was much cheaper and easier to just take a shuttle bus in.
I'd be going this year but my brother can't make it and I don't really want to make the trip alone. It just wouldn't be as much fun.
We are planning on going to LSPR again this fall as they just put it back on the national schedule