Ok, hear me out. Is it possible that this land may have too much kinetic energy?
The way the eyes and brain work, is that the eyes are drawn to movement. That's why amusement parks surround the guest with movement. It creates excitement. But usually it like one ride in front of you and one one either side. Maybe one behind you. But anywhere you look it is a single layer of movement. Sometimes with good design you will get a double layer of movement like the Peoplemover/Astro Orbiter. When the Skyway existed it was 3 layers of movement. But that was truly an outlier, because "theme parks" in general are pretty light on kinetics in comparison to traditional amusement parks.
Nintendoland isn't double or an even triple layered movement, it's EVERYWHERE! Some people can find that kind of visual stimulus overwhelming. And even some regular people find it taxing and exhausting just because our brains are wired to constantly key into it. I know people who have that problem with Manhattan and Times Square in particular. There is also a large and vocal group of theme park fanatics that already think Universal, in general, is too loud and frenetic already. It makes them nervous and stressed.
Personally, I think I will love it, but do any of you have concerns?