Now that I am at home, in front of my computer, I can express my complete thoughts after two rides/experiences:
The preshow lobby is absolutely beautiful. Night and day different from the tacky style of Shrek. One of the biggest flaws about these kind of theater/simulator rides is that they require a long, drawn out preshow and becomes a total chore by your second experience. With this, however, It's not too long and just short enough to get to the point, be engaging, and not feel drawn-out. While the digital mapping used in the preshow is pretty nifty, there is a really awesome effect that I wasn't expecting with one of the "artifacts" in the room. I won't spoil it unless you really want to know, but it rivals the Rocket AA in Mission: Breakout for the "wow" factor. Don't set your expectations too high, but I think this is the best pre-show UC has ever done. USH took a note from Mission: Breakout and realized they need to keep preshows engaging by adding a cool element to it.
Now for the show itself. Like what everyone else is saying, the seats were
rough. Well, IDK if rough is the right word, but
very jarring at times. The motion would be smooth and suddenly I feel like I got broadsided by a car. I foresee them toning down the motion just a little bit as I think they're going to get some negative feedback on this. There were very few "4D" effects like Minions had as it was just some water spray, wind, and seat motion. This was really more of "hey, look what we can do with digital mapping!" than a 4D show. I took Wesker's advice and sat in the back....second to last row in the center to be more specific (Nobody wanted to sit back there as they were all pushing for the front!). I'm glad I did. The mapping was used fantastically for the finale. It was so immersive, it was far better than T2:3D's 180 degree finale. This compensates for that shows's loss. Oh, and unlike Supercharged in Orlando where the lack of 3D made the ride worse, the lack of 3D actually helps this a lot. It wouldn't work with the projection effects. Rest assured it wasn't to have no 3D for the sake of no 3D, but it was a good judgement call. One less 3D ride.
Overall, this was a surprise hit for me, and I think it will be for everyone. It's a filler attraction, but it's a good filler attraction. Much better than Fallon, Supercharged, or Shrek for a filler. The length is perfect. Not too long like Shrek, but long enough to be engaging and not be drawn-out. We even got the best pre-show Uni has done out of it so there is that. If I had to give this a grade, it would be a solid B. We got the better end of additions for Uni parks. Can't wait to see what JPRA 2.0 will bring!