A first-time customer (colloquial); someone who visits an establishment without being introduced by a regular or without previous visits.
この料亭は一見さんお断りなので、事前に紹介が必要だ。
This ryotei refuses first-time customers, so an introduction beforehand is required.
一見さんでも入りやすいカジュアルなカフェが増えている。
There are more casual cafes that are easy for first-time customers to enter.
観光地では一見さん向けのサービスが充実している。
In tourist spots, services for chance customers are well developed.