To @Wandering13213
"Zombies"
That is how our friend @FirstTime described the behavior of walk-in guys in "nest" buildings ringing at one door after the other
not very sure where to go.
In buildings (Hing Loong or Phoenix, places I know) where WG are ONLINE on the Database, there is no such a need.
Guys can look at the database, contact ladies and book them.
I generally book my regulars ahead to be sure I see the one I want and I do not have to improvise going all around.
But in places like Fuji (very few / none online) or Kam Bong as there is very little information, there is little choice.
It also depends on personal habits, going to see regularly the same ones that deliver the flawless you appreciate (= little risk of deception)
...or trying to find each time a new one which is time consuming with hit & miss and/or bait & switch (with many FAKE pictures, like ...aliens
)