Short answers, pulled from the story.
No single host led the ceremony that evening. Instead, a rotating cast of presenters stepped onto the stage to announce winners including Sugar Ray Leonard, Bruno Campos, Kelly Hu, Zachery Ty Bryan, Ben Stein, David Gallagher, Coolio, Danica McKellar, Nicholle Tom, and Chris Roberts.
The event took place during Electronic Entertainment Expo 1999 to honor games released between late 1998 and early 1999. The ceremony occurred at the Variety Arts Theater in Los Angeles, California.
The Legend of Zelda: Ocarina of Time ultimately won the most awards including the newly named Game of the Year trophy. Nintendo EAD developed this title which tied for the highest number of nominations alongside Half-Life created by Valve.
Organizers renamed the top prize from Interactive Title of the Year to simply Game of the Year. They also introduced a new category called Outstanding Achievement in Character or Story Development while splitting Family and Kids titles into Children's Entertainment and Family.
Sid Meier received induction into the Academy of Interactive Arts & Sciences Hall of Fame that night. He was the creator behind the Civilization series and his work represented a significant milestone in strategy gaming history.