We took family here to eat at the HWY 66 Diner (2 adults, 1 teen, 2 kids). The food and service was both outstanding. My husband is a chef and can be hard to please at restaurants and even he had a great experience.
Portions are generous so small appetites might do fine sharing a meal, especially young kids since there is no dedicated kids menu or portions.
At the time of writing, the main entrance was closed for construction. I would recommend visiting families use the valet/hotel entrance by the parking garage. Otherwise it's a long walk from the parking entrance on the side to navigate little feet through stairs and an escalator while keeping them away from the machines.