It sounds obvious but you need a plan.
Most people open restaurants because they love food, they’re passionate cooks but they’re not necessarily business orientated. If you want to run (or already run) a family focused or friendly restaurant you need to plan how you are going to market your restaurant to that niche.
Personally I loved taking my daughter to a family friendly pizza restaurant when she was small. We probably visited the same place for about 10 years. It had tiled floors so any mess could easily be