Most times the mamasan is the owner. Three or Four of my present and past, go to, shops the mamasans are the owner. I know this because I have been involved in the beginning process of some of them getting the stores.
There is no real rhyme or reason if a mamasan can or will see you.
Sure, if the shop is slow and the girl/girls arent making any money they will get upset with the mamasan if she takes the customer.
One remedy that never fails, for me, in this case is to simply have back to back sessions with both of them or even four hands if possible.
One time recently I was doing a two hour session with a girl and we just finished the first round when the mamasan arrived at the shop. I told the girl that I changed my mind and wanted the mama for the second hour. She seemed a little upset so I gave her an extra 40 and all was good.
These things make everyone happy.
I will always chose a half decent looking mamasan over a working girl.
One amp that stands out in my mind. The girls will only do cfs. But the mama will do bb anal and cim. Shes 50ish they are 30's to 40's. The mama is super well kept. She is always my preference.
MV