Although most travel agencies' summer package tours are sold out, rooms at hotels and inns can still be booked via the Internet, an increasingly popular way for people to arrange their vacations.

Many hotel and travel service Web sites have special pages for the summer, providing detailed information on resorts across the country and offering special deals on stays at top hotels in central Tokyo.

One example is the My Trip Net page on the Tabino Madoguchi (Trips Window) site, Japan's largest travel reservation site. Tokyo's Rakuten business group began increasing leisure-activity information on the site last year, even though 70 percent to 80 percent of its users have been businesspeople.