Going "all the way" happened on an earlier date - the "behind the door hiding from the police office" scene.
That was all one event in this latest update.
In the prior update - you had a frustration mechanic - that led to events with Aunt and Mom. Also 6 dates to have her put on all the different outfits - to finish that event. And I few other things that happened.
What I not sure about - is can you do event (going all the way/beach/changing hut/police) - without having done the collect them all (6 different lingerie) - and the events with the Camille.
I didn't do that way - I have playing the game as comes out with updates. So I do the walkthru in that fashion.
But like with anything - if you don't like the walkthru - don't use it

if someone is starting the game from Day 0, I think the walkthur helps.
There are alot of events in this game. The school election and everything that went with that - it still one best set of events in any game on F95.