I found myself in a similar position this summer … 2 of my own boys, a couple of their mates and an enthusiastic but inexperienced father. Pretty much as above:
Drop in at the cafe to fuel everyone if necessary
Drive up to Buzzard's Nest
Roll down to the Green
Take in the Skills Loop as you return to BN
Re-fuel everyone
Have a play in the freeride area (toughest part was dragging the other father away from this, he's determined to ride the box next time)
Ride up the Blue until they start to flag
Find next short-cut to Blue return
Let them whoop and holler all the way back down to the cafe
Re-fuel everyone
This went down well with everyone … except that yours truly then had to hoof it back up to BN for the car which, to be fair, was the first time I broke a sweat all day.
If you don't break anyone first time out, it will be that much easier to repeat the exercise.
Have a great day out!