My sister and brother in law haven't been out to eat with their baby ever. When they want to go to an "adult" non-chucky-cheese, non-mcdonalds kind of eating place, they get a sitter. And, they pretty much consider those places to be "training ground" for the grownup places they'll take him once he's of an age for discipline.
Don't move to TX. THere are no restaurants that are free of kids. Even the priciest, fanciest......everyone brings the kids. We lived there for 11 years and never got used to it.
God bless your sister and brother-in-law. It's nice to know that someone still has a clue.