I'm know I'm sperging and overanalyzing, but it's the little things like that as much as your correct noting of the marketing that helped the movie's enjoyment. It all actually made sense and felt real for what it was.
i deleted some more political parts of my comment but its fits with what i said, basically when the movie came out it was the height of Obama-level optimism, while there was cynicism towards the 1% overall everyone had strong feelings that outside of a few bad apples, everyone could come together and "reach across the aisle" to get shit done.
it would be a joke now, but the rich middle aged man going "obviously i'm going to help people in an emergency" wasn't questioned neither was his "spare no expense" idealism because we had people like the google guys who did seem to embrace the concept and then you had the "giving pledge" billionaires and guys like bill gates who people assumed were all about helping people. in general most people assumed a certain level of selflessness and competency among all employees because people were used to that, this was near the tail end of stop-and-frisk but in general being anti-police was still an extreme fringe view when the movie came out. people still thought cops were badass super genuises that had reasons and a great understanding of what they're doing at all times, unless they were an extremely rare bad cop. the idea of a competency crisis was absurd to most people, maybe there might be a singular dumbass, but overall most people knew and excelled at what they did, like the nerd in the control room, he was a quirky character but volunteered to stay behind and could effectively do his job and several other peoples and didn't really give a shit about dying because it was an emergency.
agree with what you said about the guards not being disposable, like of course they reacted like normal people would, there was a lot of thought put into how it all worked and probably procedures and whatnot, this wasn't some "somehow palpatine returned" style middle finger but a labor of love, i'm sure if you asked Colin even now he'd be able to rattle off what guards are supposed to do if say a kid gets injured or how much a season pass vs a one or two day ticket costs or what silly bullshit names the resorts in the park all have that denote their quality. And that trickled down, you probably could have pulled aside one of the extras and they'd be able to tell you what their job was at the park and what is happening that day same way you could a disney employee. I'm sure plenty of people working on the film could even give you directions the same way someone might know how to get from one area of a disney park to the other.
Its literally a stupid film, the type of forgettable B+ level movie people wouldn't normally obsess over but because it was the last one that had that level of thought put into it it gives it real value, it seems like every movie of the last 5 years have more plot holes than non-plot holes and its obvious no one involved gives a flying fuck about the universe this stuff takes place in and it bleeds down to the characters as well. everyone is disposable unless they're not and there's no real stakes to anything and the characters quippy nature means even the audience doesn't care.
Meanwhile you truly did go on a ride in Jurassic World, especially because of that iconic death, people genuinely didn't know who else might fucking die. Its so competent that its genuinely unique in our modern world, you can tell everything was thought about and the writers gave a fuck, what used to be just a given as something you expect in media is now absurdly rare. even if people writing the film or working on it hated the franchise you'd never know because they still gave 100% now its the opposite, you can tell that shitty writers hate whatever media they're working on.