I really enjoy Navi River Journey. I'm not sure I enjoy it enough to ride it without the rest of my family, but then I'm not sure I really enjoy any ride that much. I wouldn't wait in line an hour for it either. If I have FP, or can hop on with a short standby wait, I ride it. I think it is visually stunning, and relaxing. However, it is not an E ticket attraction. If you are expecting another FoP experience, Navi will be disappointing. If you go into it expecting a more visually pleasing version of Small World, albeit a bit shorter in length, then you will get exactly what you are expecting. I give it a two thumbs up. I think the reasons some people don't view it positively has to do with it being one of only two attractions in Pandora, and the fact that the line for it is frequently quite long and the ride is fairly short. If it had an average wait time of 10 minutes or less, were a bit longer experience, and / or weren't the only attraction in Pandora besides FoP, I think it would see much more positive reaction.