On May 02, 2000, Britney Spears had a special showcase in Tokyo, Japan for the release of her second studio album Oops!... I Did It Again, which was released in that country on May 03, before anywhere else in the world.
On May 01, she had a press conference and a photocall session, you can see a bit of it here:
On May 02, she had a M&G and signed autographs for her fans.
She also gave an interview for MTV and Big Hit magazine: