hi, i have just returned from there and as of yesterday the skidoos were not running as they need more snow. with thompson it was £29 to share and £39 on your own but i don't know of what insurance is needed.
hope this helps.
Just back from pamps today, after 5 days snowboarding, and yes most of the runs are open. I was staying in hotel markony which is right at the bottom of the slopes and it is possible to ski from top to bottom, if you don't mind the odd rock or patch of ice!