Quick hit · A Headland concept build
A world tour lands in nine cities and seven countries, and the keynote is in English. Put live captions on the phone the attendee already trusts, in the language they think in. Switch the language below - this is the keynote, mid-sentence.
Also on the big screen, and saved with the replay. Same feed, four languages, nobody at the back squinting.
A concept build, and a starting point: your stage feed, your tour cities, your languages. Comprehension is hospitality too.