I came to this thread a bit late but I find it interesting.
I come originally from (what people on this thread call) 'the rest of Europe', and in particular from a warm southern meditteranean country. For what it's worth, I think all those who go on & on about 'the continent' & how 'welcome children are' everywhere- in my experience, that's probably the case in the summer / spring, because so many of the restaurants are simply outdoors. This though has nothing to do with being 'child friendly' and everything to do with weather. For example, most of these restaurants (at least in this particular country) have no toilet facilities for children, & loads of people smoke, and yet children can be found there in the evenings simply because everyone's sitting & eating outside. Also- I think in the summer it goes too warm to have children in bed around 7/8 (which you might do in the winter). As for the smoking that I mentioned- that can be a huge problem, particularly in winter. Now that I'm a mother, & have gone back home to visit, I've actually found that in the winter there's literally nowhere you can take your child, first because of no toilet facilities for children (apart from Starbucks) & second because of everyone smoking (again, apart from Starbucks). So everyone pretty much stays home with the children, or goes to vile McDonald type & pizza places, except in the summer. And it's interesting that most people here in Britain go on & on about the delightful habits in 'the continent', when in reality they're getting a very skewed, summery picture!
As for the point of this thread. To the OP- of course you're not being unreasonable. I always get irritated (both before motherhood & now, too) with parents who don't try to control their children's behaviour as much as possible (not that it's always possible)- e.g. in trains, buses etc. I'm not saying children should be 'seen but not heard', but I equally dislike those parents who- as others have said on this thread- think their children are the centre of the universe & show no consideration for other people and their needs / comfort.
Finally. For those who say (I think it was Bonsoir Anna?) 'I don't like child free restaurants. I like children'. That is completely beyond the point. I really don't understand (and this happens often on MN) why some people insist taking the argument in a polarized direction that has nothing to do with the original discussion. The question is not whether we like or don't like children. The question is whether restaurants have the right to impose a children-not-welcome policy (especially in the evenings). And of course they can, it's absolutely their right. (And by the way, I've never felt there are no restaurants to take my baby- both for breakfast & for lunch, there are plenty of wonderful choices, very far from the classic 'chicken-nuggety thing' that most people associate child-friendly restaurants with.