From what I can tell, it doesn’t matter which ride gets set up first for the local carnival. It’s not going to be in action until the whole thing is ready.

However, when I see a Ferris wheel, what does that signal? 

It signifies that there is more, that the whole experience is going to be available. And for a bonus, it’s a signal that can be seen from farther away simply because of what it is.

So maybe it doesn’t matter if the game kiosk goes up first. But if you’re trying to tell a story and have it told as early as possible, why not go ahead and get the Ferris wheel up?