This is more of a suggestion than anything else:
Once the story is over, and the last third is done could you maybe send it into some sort of randomized interactive hotel game, where you can just interact with the other NPCs, and somewhat keep the charade going for a little bit? The game/novel is really well done, and I genuinely enjoyed my first playthrough through of the game/novel. It was well-paced, well-written, and I genuinely got invested in the characters. I couldn't complete all the missions though, which was a shame, and having a bunch of extra days, and maybe some random interaction events after the story arcs are over, would just be nice to have, maybe even some off-shoot mini-games with the characters would be nice too. It doesn't have to always be super new stuff either, just stuff to sort of tide-over the player, and make things go slower, after the arc is done, maybe even the illusion that life is going on so you can complete the other tasks at hand.
Just my 2 cents though.