No experience with his infield camps specifically but I have been around him and a few of his events and have had some of my HS players play for his travel teams in the past.
Nate is a very high energy guy that is very good at commanding attention of young players. He seems to stay mostly mainstream in his instruction approach, which I think is good for the short term camp/showcase events. He openly states very high standards and aspirations for his events and seems to maintain a good reputation - not easy to do in this arena.
It has been a few years since I have had those exposures and it looks like he continues to grow so I don't know if he has reached the point yet of spreading himself too thin to where the product starts to become diluted. If he is there in person and actively involved, there will likely be something beneficial for a young player.