And that is exactly in what you succeeded very well. This game actually educated me through playing it.
If they have museum for that Lock 44, I would think it would be worth offering this to them. They might be interested, since while as an entertainment game this is bit boring, as interactive museum thing, I think this would be quite okay.
That I remember in Sweden there is this Wasa Boat museum, and they had this simulation for some sort of different shape and height of a boat, basically quite simple from using point of view, but I found it fun to spend the little time there trying it out. But had I downloaded it from itch, I would have through that boring.
I think your game, even in its current state, could be the same, that as long as there would be a relevant museum, then getting there to try out how to be that gatekeeper (or whatever that profession is called), with this game this would be quite fun experience for couple of minutes in that museum. I think, this would already be better than the Wasa Boats simulation thing, and yet, I enjoyed that one too already.