Young Prince William - Klosters Ski-ing

The video captures a brief interaction between students and a teacher. The students greet the teacher and ask if he remembers them. The teacher provides guidance on where to go, and the students inquire about his holiday plans. The video concludes with the teacher giving final instructions and saying goodbye.

What does the sir need to be able to do according to the children?

What is the repeated time interval mentioned by the sir?