I absolutely love the game idea! Such a fun game. There are too few story-driven adventure games out there. Unfortunately I encountered some bugs that prevented me from finishing it (After finishing the ice-aliens I was not able to move anymore :( ). Also I could not interact with the food they were serving.
One thing I would suggest is to remove the "timeout" (or make it a bit longer) when checking out the ambassadors notes the first time, or communicate that you are able to see the notes between visits again.
Another big improvement would be to make the text skippable, that would make game experience much smoother.
I'll definitely keep an eye on this game and look forward to play a bug-free version! Hope you find the time to fix the little issues that remain :)