I think most posters on here are missing the point of how Nintendo has set up these lands. I think of them more like traditional fantasyland rides that are accessible to a wide variety of audiences. As someone who doesn’t enjoy coasters, and who has many family that struggle with motion sickness, I’m very happy with their choices. We were all able to enjoy Mario Kart together (in Hollywood) and will likely try DK Mine Cart when it opens, though that will likely push our boundaries.
I find it hard to say Mario Kart isn’t a successful ride, when its average wait time is something like 80 to 90 minutes, and can be enjoyed by the whole family.
To me, that’s like saying Mickey and Minnie’s runaway railway isn’t successful. It may not be how you think it should be, it may have room for improvement, but that’s not decreasing anyone else’s enjoyment, and I’d bet metrics look good on it.
Just my 2 cents.