Diddy is back — at least according to him. The rapper, in a sharp black suit Wednesday night, stopped by the newly reopened Marquee, where, we’re told, he ordered a bottle of Ciroc vodka for every table in the club. After hugging the night’s entertainment, DJ Vice, Diddy got on the mike himself to give a shout-out to the crowd by exclaiming, “Diddy is back. New York is back. Marquee is back,” our source reports. The club’s been highlighting DJs since it reopened.