(よやくせい)

よやくせい
noun
reservation system; by appointment only
businessdaily-life
1. reservation system; appointment system; by reservation only
A system requiring advance booking or reservation before visiting or using a service.
このレストラン予約制(よやくせい)です
This restaurant is by reservation only.
Since it's by reservation, please call in advance.
The hospital has switched to a complete appointment system.

予約制(よやくせい) says that a place or service is available only to people who have booked ahead. The suffix (せい) turns 予約(よやく) (reservation) into the name of a system, so the word describes the establishment's policy, not any one booking.

Usage

Where you meet IT

Clinics, 美容院(びよういん) (hair salons), small restaurants, and popular exhibitions at 美術館(びじゅつかん). Note that 病院(びょういん) (hospital) and 美容院(びよういん) (salon) differ by one mora, and both commonly carry this notice.

Similar words

先着順(せんちゃくじゅん) (first-come, first-served) and 抽選(ちゅうせん) (lottery) are the alternatives when demand outstrips places.