Plot 
I changed  this is a highly fictionalised account of Thompson and attorney Oscar Zeta Acosta's actual trip to Las Vegas around the same time period.
This is contracticed many times through out the article. In one instance, under the Pre production sub heading it says:
Depp remembers, "He saved it all. Not only is [the book] true, but there's more. And it was worse.

Later on under the sub heading Reaction, it says:
Apparently it all came flooding back to him, he was reliving the whole trip! He was yelling out and jumping on his seat like it was a rollercoaster, ducking and diving, shouting 'SHIT! LOOK OUT! GODDAM BATS!' That was fantastic – if he thought we'd captured it, then we must have done it.
Although it is a far fetched story, it is not highly fictionalised and regardless, it can't say it is if there are statements throughout the rest of the article from direct sources that are saying it is real.