Rhonda, the father was an olympian and wanted to share his experience and help kids have some of the same opportunities that he had. He has coached current olympians. It isn't just a job.
My eldest is going off to college in the fall. He was accepted to some fantastic schools and it was partly because of the amazing extracurriculars he has had the opportunity to take part in. I know that if he hadn't done them he would not have been accepted to some of the schools he was.
Yes children learn everywhere, however holidays mean that they can learn stuff that is difficult to learn in other situations. I believe that a week of trying to read signs in spanish/french so you can figure out what to order, using your school spanish to greet people, figure out what a french word meant based on the spanish you have learned did a lot more for my son than spending a month in the classroom. He finally really truly understood why learning a language was useful.
I don't think holidays are luxuries... well skiing in Chamonix for three weeks is, but taking time to spend with family and friends and experience life outside of your own little bubble... whether that is a day trip to Calais or a tent in South Wales is important for kids to experience. It makes them a more rounded person.
Why do I send my kid to school? Because they learn things there that they don't learn at home, or on trips. It gives them a richer experience.
FWIW, when my kid has been on trips during school time
- he has had the full backing of his school, they have recognised that the opportunity he was given was a once in a lifetime one and more valuable than 2x+3=7.
- he has taken work to make sure that he hasn't missed anything and the school has had funding for the days he has missed. Here it is called "contract" and if you are going to miss more than three days you can get one. He skyped when their was group work so his group didn't miss out on him being there.