If you're thinking that English is the universal language. You'd be wrong if you're planning a conference, convention, or corporate event in Seoul, Hong Kong, or Tokyo.
Seriously. For as world-class and bleeding edge as these cities are in education and culture, this isn't like holding an event in Amsterdam or Norway where every Hollywood movie comes in authentic English. They still dub here. What this means to you is that if you want Tabasco sauce, ya ain't gunna get it unless you pronounce it, "DabahSuh-Koh SohSuh."
Or, just work with an English Speaking Event Catering Company and Banquet Hall in Seoul Hong Kong and Tokyo