There is 'Ginza Empire' (
https://479ginza.com.au/Roster), and 'Ginza Club' (
https://www.ginzaclub.com.au/Roster). Ginza Empire is 5 minutes walk from Central station exit. Ginza Club is a further 5 minutes walk in the same direction. It's the same owners and same process/management style/standards/quality control, but different staff run each. Sometimes the girls get moved between each.
You can rock up without a booking if you like, but you won't get a line-up like at most other brothels. Even regulars don't get the privilege of line-ups. There are waaaaaay too many girls there to do them. Reception boys will ask you what your preferences are and try to find someone available who meets these, and there are also tablets set up at there where you can look at the girls' profiles and ask if X or Y is available. But if she is popular then she will of course not be available on the spot. Depending on the time of day (especially at peak times), you may only be able to pick from the less popular girls. But less popular doesn't necessarily mean bad, it just means they haven't built up a reputation. There are always new girls coming and going.
The tablets at reception show the exact same profiles that are publicly available on their websites, so you may as well just look at the websites and text to book a girl as soon as the rosters are released at 5pm the day before, so you can lock in almost any girl at your chosen time (there are 2 or 3 girls who get fully booked out for the entire day within 5 minutes of the roster going up lol).
If you pick a girl but for some reason you're not happy with how she looks when she enters the room (I have only ever seen good-looking or stunning-looking girls either in bookings or walking around the building but), just excuse yourself from the room IMMEDIATELY without touching her (not even hugging) and go back to reception. Reception will line you up with a different girl instead.
Any other questions?