I can tell you that my daughter has used the Whitetail all-day program many times. She always enjoyed it.
It's pretty easy for all concerned. You can call in advance to book your child. In fact, they may already be booked! You check your children in at the learning center and they're off. If I remeber correctly, they even take care of the rental equipment for them. It's been a while since she's rented (the Ski Chalet Junior program is great!
) The only down-side is that I would imagine they will be REALLY busy