Entering through the green pipe tunnel, it felt like the color saturation had been turned up once you properly enter the park. It’s not just for looks too, you can interact physically with the park and gather coins from doing things like punching lucky blocks to playing the various minigames. Mario fan or not, I recommend setting aside 3-4 hours here to explore the area. It’s definitely going to take up most of your day at USJ, so probably get a 2-day pass if you also want to go to all the other parts of the park (e.g. the Harry Potter world).