Didn't crush say he's getting rid of the timescale entirely? or something to that effect? not going to bother with counting minutes or something. All you need is morning, noon, afternoon, evening and night. Most these questions make the game sounds like a micro-management grind sandbox which is boring and I don't think will be fun.
You go to the beach and are presented with more options there, obviously. Nobody cares about going to the beach and paragraphs show saying you went to the beach.

that's literally the worst type of game and you might as well not have had the beach option at all if you can't do anything specific there. If it was just some B.S designed to raise happiness or whatever. These questions are obvious to me.
Seems you guys want a fully functioning sex engine? IF THAT'S THE CASE... why all the bitching? Making a complicated sex engine takes time. Sounds like you don't want crush to focus on story. You want a DND designed sex engine?
Anyway if the sex scenes can be custom written each time. And if they can be dynamic enough/new enough each time that one won't feel repetitive to the other. Then that's great. And sometimes all you need to achieve that is some new avatars/scenes, and story... you don't actually need a complicated sex engine.
The outline of the plot is not just your life in the brothel. It's your life as a spy. IMO you should get side missions that do different things for you + you can advance the main plot by getting closer to certain clients where events happen outside the brothel as well. Like on a yacht or a different club, or a studio etc. I would even have side missions that are break and enter, don't be seen. other ones where you use your charm/looks. more dangerous types of rival gangs maybe or organizations? could even do double identity stuff where she goes undercover somewhere else where she needs to be respectable and the two roles of being a whore in a club and this respectable role clash.
I wouldn't go deep into micromanaging expenses. Just have rent and that's it. This isn't a "live on your own" finance game. Keep the focus away from grindy shit like that. If something ends up grindy it should be traits of your character. Like skills in sex, or clothing upgrades, exhibitionism, depravity, tattoos/piercings, hair/makeup/body modifications, hole stretching... keep the focus on the character.
Obviously money can be useful for buying clothes and other things character oriented i just listed. But people will be buying you clothes sometimes, or jewellery or taking you out to dinner or whatever else and spy equipment is covered by your government agency. You could use money to upgrade your living ie. better locations or renovations. Maybe to buy a motorcycle/moped. But this a question better answered when you write the damn story of the whole game...
In other words do the people you are spying on ever figure out who you are? will the game continue from that point? do you end up their slave? do you have to buy your own freedom? or maybe they dont find out who you are but decide they want better control of you because of some event you did that made them suspicious. So, maybe they kidnap a guy you got close to and started a boyfriend/girlfriend relationship with there. or maybe it's a girl who became your best friend and you need to work for them etc. I don't know but the need for money in other areas usually develops as you write. Just write the damn game and everything falls into place. Stop trying to decide shit before anything is written.