Was just poking through this one and some updates are needed to the OP. I could just do them myself if you prefer, but you've done a fine job keeping this together so I figured I'd leave you to it.
08R - my original source was wrong on the owner - it is his brother, Sheikh Abdullah Bin Hamad Bin Isa Al-Khalifa instead.
13R - not sold yet as covered elsewhere.
15R - we've really messed this one up (I'll take the blame). I think you know the real story now.
18R & 26R - minor detail, but BMW have renamed the 'Mobile Tradition Museum', calling it the 'Classic Collection' now.
The rest still looks good - at least for today.
>8^)
ER