Hong Kong authorities will review a new reservation system for a Sai Kung trail famed for its dramatic volcanic rock columns after the National Day “golden week” in October, following large numbers of no-shows during the first two trial runs. Only 1,560 registered and walk-in patrons arrived at Po Pin Chau on Saturday and Sunday, despite 3,230 people having made bookings under the real-name reservation system. Lawmakers and a district councillor have called for more on-site quotas, clearer...