A dear friend going to Paris with 16 of her family (the youngest two years old) asked me where to go, so here goes (all are on John Talbott’s Paris or Google so I won’t give coordinates, etc.)
Pirouette in the 1st, near les Halles, not only has outstanding food, in good weather it has tables outside in a traffic-free piazza where kids can run around freely without parents worrying.
The Baltard au Louvre, also in the 1st, not far away, between the American visitors favorite knife and cooking ware shop, Dehillerin, and Francois Pinault's new museum, which also has plenty of tables outside with no traffic and good food.
The soufflé-focused Recamier in the 7th, not far from Bon Marche, is on a blind alley, the rue Recamier, that ends in a lovely little garden, and has lots of tables outside from which kids can escape and run around between savory and sweet soufflés.
Tokyo Eat in the 16th or its downstairs more upscale neighbor Monsieur Bleu faces the Eiffel Tower and while the view is better from Tokyo Eat, the food is better 3 flights down.
Les Climats in the 6th, near the Orsay, has a garden with tables and superb list of Burgundies. It’s in the former telephone exchange, a photo of which hangs inside. Superb food, elevated prices.
The Grand Cour in the 4th, is owned/run by the chef Mauro Colagreco from Mirazur in Menton, where I had the best fish of my life. It’s in a grand court, duh, with tables under umbrellas and is surrounded by a music and ballet school, which can be either soothing or annoying, when the drum class is in session.
Thinking park wise - in the Buttes Chaumont in the 19th, the Pavillon Puebla is good not great.
Also in the Parc Montsouris in the 14th, there is a restaurant called the Pavillion, where outside, kids will have a ball and the food is not half bad.
Kitchen (Ter)re on the Blvd St Germain, has seating on the terrace, eg the sidewalk, which our grandkids found perfect for rope skipping. The place is run by William Ledeuil, of Ze Kitchen Galerie, our favorite restaurant in Paris.
Speaking of which, Coretta in the 17th, has tables outside and borders the MLK Park and offers some of the best food in Paris at reasonable prices.
Near the Louvre, if you’re thinking of visiting it, in the Tuileries is the Saut de Loup, which has quite pleasant but not mind-blowing food in a bucolic setting with lots of room to roam. Note: My last meal there was a disaster service-wise.
The Bois de Boulogne has two of our great old favorites, the Pre Catalan and the Grande Cascade, but unless you’re into hedge funds I’m not sure the meals for a family of 16 are affordable.