I'm really surprised at people being "Man, that guy can't be Fujitora, he's not focusing on his work, he's wasting time gambling, that's not what an Admiral does!".
Seriously, a wacky character who goes out of his way to do something completely out of place? When has that happened before?
Oh, c'mon, they found Aokiji sleeping in Tonjit's house and who knows how many days he spent there. Also, in the super important and dramatic moment he had to run to save Smoker, he fell asleep on the penguin.
Fucking Kizaru can't even distinguish the communication den den mushi from the call intercepting den den mushi, and he's stoned as fuck all day.
I mean, when shit must be done, they are the most reliable guys in the planet, but otherwise, they do goof around and do weird stuff.
Fujitora (if it's REALLY him, of which I'm 90% sure) likes to gamble (just like Zatoichi), but when things get serious, he can possibily sink the entire island in a second. What's the issue here? I can't see it, seriously. Discussing marine professionalism, now?
And also, of course he is in Dressrosa and not in Green Bit. You have to get through Dressrosa to get to Green Bit, it was stated this very same chapter. He just happened to find a casino and is spending his money there.
It's like, the easiest picture to see ever. To me, it makes perfect sense.