Retail rents in Hong Kong are expected to remain under pressure, as the trend of residents travelling to the mainland for leisure has led many businesses to opt for short-term leases, experts have said after the vacancy rate in the city’s busiest districts hit a 4½-year high. Analysts on Monday also attributed the mounting vacancies to shifting consumer preferences and the difficulty landlords faced in securing high-value tenants once luxury goods shops, such as watch and jewellery stores, had...