Outback is not fine dining. It markets itself as a family restaurant, it has a children's menu, and the price range for a steak dinner is $13.50 to $30, including two sides. Outback is basically a chain restaurant that serves fast food with table service.
Regardless even a family restaurant is not a place to take a child who cannot conform to manners so as to not cause a disturbance. For whatever reason,
Get a babysitter or head to Chucky Cheese
And yeah, I adopted and raised a SN child of this age who could not control his behaviors in public,
so we only went where we could train him in manners and self control over time and not disturb others experiences. For over 2 years we went nowhere we couldn't keep him in a shopping cart. Big dates to Home Depot for hot dogs,