Thank you for the bug report. I've corrected most of those bugs. Unfortunately, some of them might have appeared because you've tampered with the data directly. Especially for night scenes. Cause I've just tested it on my side, and the Yuki/Atsushi scene triggered 4 times out of 6 (you actually have 10% chances of it not triggering). (Same thing for Yuki/Dog at night, triggered it and it ended up in the Souvenir Book right away).
For the other scenes, it's probably a conflict with the variables changes as the whole thing behind it is very sensitive about variable changes that aren't meant to happen. I should add that some of those scenes have requirements to be triggered: some only need to spend the night with said parent, but some (like Reiko/Yuki/Ayame first scene) have pre-requisites (for that example, you can't see the scene unless you've seen the two previous futa scene between them and waited at least a day).
I did remove stuff that was sort of preparation for the DLC to avoid problems (Like the fact you're chasing down scenes that are not in the game at all (like Eri Public Use 7)). But honestly, those scenes aren't supposed to appear if you play the game without a save editor next to it :x
As for your propositions, it's possible to integrate a shortcut for the zoo, but skipping days is a bit too complicated. The way I coded it might lead to way too many bugs so I'd rather leave it the way it is now.
Anyway, thanks for the feedback, that was really helpful. I'll release a patchnote tonight with the bugs I've managed to correct up to now.
@groggittu If Reiko says that it means you're checking on her too early. To avoid problems with people rushing Reiko's scenes (leading to problems with her frustration value), you need to wait until her frustration has reached a certain value before being able to trigger the scene (30 if I recall right).