I do not know...but I assume that the specific area of the chalet is closed to sleds (nothing bothers a die-hard, granola-eatin' hippie backcountry skier than a buncha sleds tearin' up the slopes and scarin' the wildlife...).
HAHAH that's the best part about sledding, oh and just to be clear there are several studies that have proven the flight response from most ungulates is much more intense and sustained in animals that are a approached by hikers skiers and people on snow shoes than people on machines, most likely because the animals are aware of the machines presence where as people on foot will startle the animals
Now running over a 3 pinner is a whole other story
JK
Just replaced my old Eiser bindings and heads with a pair of Black Diamond Zeolets and Marker touring bindings
