Andrew James’s review published on Letterboxd :
Unfortunately weak in a lot of places (craft, acting, storyteling), this is no Fear and Loathing - though maybe the comparison is unfair.
Still, at the heart of it, The Rum Diary has some things to say and gets at them rather interestingly with Thompson's unique flair of verbiage. There's also the oddities of the precarious situations he finds himself in as well.
It's hit or miss and isn't all that funny. Still, watching Depp take hold of the character and metamorphosing into the character we know and love (i.e. Hunter S Thompson) is a lot of fun at times. Michael Rispoli and Richard Jenkins are likable douche bags as well.
And I've said it before and I'll say it again... Why in the name of all that is good and holy is Giovanni Ribisi not carrying more roles!!?