SeattleChange
The ballroom on the highest level can seat up to 2,715 persons (banquet-style) or 3,630 persons (theater-style). The exhibit hall on the lowest level can hold up to 790 booths or seat up to 6,800 persons (banquet-style) or 9,600 persons (theater-style). Extensive acoustics work was performed to not only provide sound isolation between adjacent activities within the center, but also to control noise output to the surrounding community