Honestly, there is no way that I would bring young children on the Navigator. I’m not sure what they would do all day. We were on the same sailing with GeorgiaPeach this past May for 15 nights. Navigator has very limited indoor space and the outdoor pool area is unusable in inclement weather.
I will say that our entire family of ten (including grandchildren ages 7,8,10,11) just returned from a family cruise on a Royal Caribbean mega ship. Yes, the ship was huge and always busy. That said, our grandkids had a fantastic time. There was so much to do for them. In addition, there was a Kid’s Club that provided care for the kids free of charge in two hour intervals. While my wife and I would never sail RC on our own, it was a great family experience. Lastly, we were surprised by the dining room service. I know this may sound crazy, but our servers on RC surpassed those on our Navigator cruise where dinner was routinely long and often disjointed experience.