Presuming that means something along the lines of 'outsiders' or 'newbie' in our terms.
Spot on. Most providers in Japan are hesitant to let Johnny Foreigner near any of their girls because they have built up the following expectations over the years :
(A) Johnny will attempt to obtain services that have already been indicated are NOT on the menu.
(B) Johnny will try and haggle over the price of the services that ARE on offer.
(C) Johnny will do his best to get away with not wearing a condom.
(D) Johnny will be generally disrespectful and probably fuck the girl in a very rough manner.
As a result there are usually flat "no foreigner" policies or sometimes intricate barriers of bouncers, management, up front extra charges, a certain number of drinks having to be ordered in the bar and so on before you get as far as an actual female, and even then you can likely expect a massage and a hand job, little more, for far more than you expected to pay.
My mate actually warned me unprompted prior to my first trip to Tokyo "if any girl offers you a blow job for Y3000, it's a lie."