Actually Goblin, it doesn't much matter whether one is overseas or not (English-speaking Hawaii in this case). I on more than one occasion have stood in front of 100+ punters on the PA explaining the situation, as little as I knew at the time and how unknown as it seemed. When given even some small tidbits (there's enough in your post above to keep a speech-writer going for hours) the majority of the punters will be happy, or at least understanding and not totally feral.
Say nothing? Expect to be criticised by the punters. Any 4-bars can be the best button-pusher or saviour of the day when the effo accidentally tips it up on it's side. A real "commander" is a "leader" of the SLF as well.