first visit without introduction
Refers to visiting an inn, restaurant, or similar establishment for the first time without a prior introduction or connection. Often used in phrases like 一見さんお断り (no first-time customers without introduction).
This traditional restaurant does not accept first-time customers without an introduction.
It's a shop where even first-time customers without an introduction can drop in casually.
That long-established restaurant is famous for refusing first-time customers.
Even without a friend's introduction, I went to try the shop as a first-time customer.