I've played the walkthrough into the day 30something of the game, and find now that the walkthrough is chock full of slight variants on the same sex scenes, and the plot elements are fewer and fewer. I'm probably not going to play as much now that much of the plot is completed. I can say day 17-24 was clearly my fave for this game, and I'd really like a few more intense moments in the mid game of this game. Course it's possible that the walkthrough is not emphasizing plot elements that don't lead to sex, in which case I'd be curious what I'm missing.
The part I missed was going into the reading room on day 10. That led to a cascade of events causing a Nell miss on day 12. Restarting on day 8 and paying closer attention fixed all that.