Japanese travelers are opting for shorter, cheaper and closer overseas trips during the country’s Golden Week holidays as they feel the pinch from the yen weakening to 34-year lows and higher inflation abroad, according to a major travel firm. The average unit price for an overseas trip fell 1.5 percent from last year’s Golden Week to 204,900 yen ($1,300), while the average number of days traveled was down by 1.0 at 6.0 days, H.I.S. said. Cost-efficient holidays to neighboring Asian destinations have proven popular for outbound tourists, with South Korea’s capital, Seoul, topping the ranking o…