Interesting. We moved back from France this summer, and I have to say that here (admittedly it's Cornwall and maybe not typical) people have been absolutely lovely to the DCs. We've been out to lunch / dinner when we can afford to, at Pizza Express type restaurants, and have had great experiences, fantastic waiters, etc.
And in France, I really did find the 'child friendly' thing to be a bit of a myth. Some people loved them, some didn't, just like here. Children's menus had chicken nuggets and pizzas on, just like here. DS2 developed a passion for mussels in the restaurants of Biarritz, but it continues, finances permitting, in Cornwall.
Yes, you see teenagers, and also younger children, sitting up at tables conversing with the adults, and that's great and I make a point of doing that with my dcs too. Often, though, this means talking about Ben 10 a lot, and DH and I also enjoy roping in a babysitter and heading out without them.
The late bedtime issue confused me for the entire 5 years I lived there. Nine pm was the standard early school-night bedtime for 4 and 5 year olds. School started at 8.45 am. There's just no way mine could have functioned on that little sleep and so they were always asleep by 8. People thought I was mad. Their children would be so shattered by the weekend that they'd sleep in till 11, and so the parents would as well. Fair enough - but I never got close to being able to manage that sort of routine.
I'm just rambling now I think, but it's an interesting topic and, in many ways (primary education another one), since we've been livign here, I find the automatic UK bashing (not on here, in general) a bit baffling, as in lots of ways life here is good, and other countries don't seem to do the 'we're crap, we are' thing like we do.