We also went on Navigator last week. Our 8 year old had a good time for the most part, but we had to wait 30 minutes in the hallway waiting for the bridge part. It was hard to keep the kids entertained in a hallway. And security didn't let you leave to come back. Once they secured you, you have to be within their sight. When we finally got in the bridge, most of it was roped off and then Captain Johan promptly left the bridge as soon as we entered. It was extremely disappointing to pay all that money and the Captain just leaves after we were all waiting in the hallway for so long. The tour guide ended up telling us mostly about the bridge. The officers were there to answer questions at the end, but no Captain.
It's too bad we didn't have an All-Access Tour available on our March cruise - we would have preferred Captain James because I hear that he's very personable.