Yumi Sakai (5th L, on stage) celebrates with her family and Disney characters as she becomes the 600 millionth guest of Tokyo Disney Resort at the Tokyo DisneySea in Urayasu, suburban Tokyo, Japan, on April 12, 2014. Japan's Disney theme parks, Tokyo Disneyland and Tokyo DisneySea, received on Saturday its 600 millionth guest since its opening on April 15, 1983 and September 4, 2001. (Xinhua/Ma Ping)

Disney characters interact with guests at the Tokyo DisneySea in Urayasu, suburban Tokyo, Japan, on April 12, 2014. Japan's Disney theme parks, Tokyo Disneyland and Tokyo DisneySea, received on Saturday its 600 millionth guest since its opening on April 15, 1983 and September 4, 2001. (Xinhua/Ma Ping)

Yumi Sakai (4th L) celebrates with her family and Disney characters as she becomes the 600 millionth guest of Tokyo Disney Resort at the Tokyo DisneySea in Urayasu, suburban Tokyo, Japan, on April 12, 2014. Japan's Disney theme parks, Tokyo Disneyland and Tokyo DisneySea, received on Saturday its 600 millionth guest since its opening on April 15, 1983 and September 4, 2001. (Xinhua/Ma Ping)

Yumi Sakai (5th L, on stage) celebrates with her family and Disney characters as she becomes the 600 millionth guest of Tokyo Disney Resort at the Tokyo DisneySea in Urayasu, suburban Tokyo, Japan, on April 12, 2014. Japan's Disney theme parks, Tokyo Disneyland and Tokyo DisneySea, received on Saturday its 600 millionth guest since its opening on April 15, 1983 and September 4, 2001. (Xinhua/Ma Ping)

Yumi Sakai (4th L) celebrates with her family and Disney characters as she becomes the 600 millionth guest of Tokyo Disney Resort at the Tokyo DisneySea in Urayasu, suburban Tokyo, Japan, on April 12, 2014. Japan's Disney theme parks, Tokyo Disneyland and Tokyo DisneySea, received on Saturday its 600 millionth guest since its opening on April 15, 1983 and September 4, 2001. (Xinhua/Ma Ping)

Yumi Sakai (5th L, on stage) celebrates with her family and Disney characters as she becomes the 600 millionth guest of Tokyo Disney Resort at the Tokyo DisneySea in Urayasu, suburban Tokyo, Japan, on April 12, 2014. Japan's Disney theme parks, Tokyo Disneyland and Tokyo DisneySea, received on Saturday its 600 millionth guest since its opening on April 15, 1983 and September 4, 2001. (Xinhua/Ma Ping)