Oi Central Seaside Park

Book on the Tokyo Metropolitan Government's booking system for sports facilities in its parks (スポレクシステム). Register first: one registration per person, from junior high school age, and people whose address is outside Tokyo can register too. Registering online needs a phone or tablet that can receive SMS; without one, register at the counter of a metropolitan park that has sports facilities, with ID. Lottery entries are taken from the 1st to the 10th of the month before; from the 22nd of the month before, free slots are booked first come, first served. There is no same-day booking at the counter, and the counter assigns the court. On the day, show your registration card and ID at the counter at least 15 minutes before your start time.