Completed the game last year and had a lot of fun. Was just sorting through my PS3 discs and randomly decided to read the manual which I'd never opened.
"Drink the Night Away
Press the SQUARE button while in Vincent's booth to take a drink. When he drinks, his intoxication level will increase. The drunker Vincent gets while at the bar, the faster he will move during the nightmare that night."
Oh, my. Maybe I will have to replay this game to try this out. Anyone try this?