That scene was so random. It came out of nowhere and was never followed up with anything. It was just awkward to sit through.
It almost felt like a reshoot to me - that entire scene just stopped the whole movie dead in it's tracks - even the music cut into it was confused, LOL. I think someone was like "oh no, these kids don't have enough depth" and it was like - let's add this scene to "flesh them out" and all it did was creep me out. It just made the kid look unstable and highlighted the already "quirky" nature of his personality. I think the kids did the best jobs they could with the material overall they were given in the film, though - they were charismatic and likable when they let them be.
The mistake they made was not understanding - they are kids, we are going to be scared for them anyway, we don't need backstory. In fact, as much as I like the actress who played the sister, and she did a great job with what she had, they could have eliminated the entire parents/divorce thing and just began with the kids getting off the plane to visit auntie and we wouldn't have missed it at all. I actually smell a fan-edit there, LOL.
That just reminded me of the other thing that I felt the director missed - I got what he was trying to do (subvert expectations) but this isn't high art - I wanted that dang scene from the trailer of the overhead entry into the Jurassic World gates. The moment I saw the trailer I was like - "I must see that in IMAX!" - and it wasn't in the dang movie! They did that weird side shot - I totally get why he did it, it was just a dumb decision in my opinion. It totally killed what could have been the first cheer moment.
Overall, the directing was really the weakest thing about the film - which is better than a well-directed bad film, LOL. I'm not usually a huge critic of directors because it's not always obvious what is their hand and what is not, but there were quite a few times where I felt he was trying
not to give us what we wanted to see without ever paying it off. It was very "this is my first big movie so I'm not going to do what's expected" when in truth - unless you have some truly genius different way to do it, in a film like this - you need to get your directing textbook out and do it by the book if you can't revolutionize it. Moments like that felt as though he was trying to just be 'different' for the sake of it.
Again, though - it didn't wreck the film at all, I was still totally satisfied - but I could have been totally blown away if some really simple stuff had just been done differently, and of course, we got more "inside attractions" footage.
BTW, I know going to a movie website is so 1998, but the Jurassic World one is pretty cool - it's set up like the ultimate theme park site, with attraction info, times schedules, etc. It's quite well done - if only Disney or Universal had websites like these!!!