here is what i can dig up, will update as I find more sources:

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Here are all of elon's tweet's during the time period:

(23-Jun-2018 to 11-Jul-2018)

https://twitter.com/search?q=(from%3Aelonmusk)%20until%3A201...

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here is the email between elon and richard stanton, the rescue lead: where richard seems to urged elon to continue the work on the mini sub

https://twitter.com/elonmusk/status/1016684366083190785

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unless I am mistaken, this is thai billionaire guy:

@JamesWorldSpace

https://twitter.com/search?q=(from%3Ajamesworldspace)%20unti...

you can check his account for details I guess

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this is the inflatable raft that I was thinking of, made by the suppliers

https://lostcoastoutpost.com/2018/jul/7/elon-musks-plane-was...

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I think this is the thai journalist i was following back then

https://twitter.com/thanr

https://twitter.com/search?q=(from%3Athanr)%20until%3A2018-0...