Gillybob, if you re-read my post, you'll see that my OH was very restricted as to when he took his holidays, and of course, although I had long holidays, I couldn't take any outside school holidays. The combined effect was that it was very difficult to have time together.
The point I was making is that for heads and school governors, it became a nightmare to pick and choose who was allowed and who was not. About constantly making value judgement about the educational quality of one holiday as against another. Then parents saying 'why are we not allowed, when xyz was- it's because their are posh/rich/middle class, etc? We therefore never took kids out of schooltime- in my 39 years in the UK we never had Christmas with my family, as OH couldn't take sufficient time off to travel.
As a teacher I also know that many parents used to take kids out of school for hairdresser's appointment (well ours is very popular we can only get time for full head of highlights i school time), shopping trips for trainers, nails, whatever. Often in key stages too. It's hard, I know - I've got granchildren coming here for half-term - and it would be a 1/3rd of the price or less if they came outside half-term, and the our local pistes would be quiet, the class sizes smaller, etc, etc. They are only 7 and 4 - but their parents wouldn't dream of taking them out of school- our of respect. We just came back from visiting out daughter who lives in the Canaries and the local hotels were absolutely full of British kids of all ages - I was amazed. Some parents are really showing very little respect for their kids education - and as always, that means all suffer. A Head can't say yes to some, and no to others, or it is pandemonium.
BTW where I live taking children out of school is an absolute NO - and nobody would even consider it. It is just not done,