I posted this in another thread…
I can highly recommended camping F1. They have 3 sites, one in track, one next to it, and one a little further out. The two sites closest to the track seemed to be very loud party camps full of Europeans in camper vans.
The third is where I stayed and is the only one with pre erected tents. You camp on the grounds of a hotel/restaurant. Theres a great chilled atmosphere there and the food is pretty decent. The toilet and shower block were very good too. Its also mainly english people which is noce. Its just one stop on the train so dits not a long commute. (You have to walk on sundays as the train doesnt run)
I arrived on the Thursday too but ended up stocking up on supplies and having some beers with the other campers. I didnt find alot of info about what was happening on the Thursday but if you do, bare in mind… if you have to pick up your tickets, its at the opposite end of the track and is quite a trek.
It would be no problem taking kids to this site.