가좌 테니스장

Booked online on the Seoul Metropolitan Government's public service reservation system (서울특별시 공공서비스예약), where this place is listed as 가좌테니스장(서대문구). The service page gives who may use it as “제한없음” (no restriction) and how users are chosen as “선착순” (first come, first served). The system says a first-time user must join the Seoul integrated membership (서울시 통합회원) and, when joining, confirm their identity with a mobile phone identity check. It does not say whether a visitor without a Korean mobile phone can join. Residents of 서대문구 can book earlier than others. The page's sentence about Seoul citizens is shown here as it is written; the page does not say whether a person who is not a Seoul citizen can book.