Journalist and bon vivant Steve Garbarino and his book “A Fitzgerald Companion” will be toasted Monday night at the Upper West Side townhouse of “Midnight in the Garden of Good and Evil” author John Berendt. Those expected include “Mayhem” actor Dean Winters, Reinaldo Herrera, Cynthia Rowley and Bill Powers, Marisa Marchetto, Departures’ Julian Sancton, DuJour’s Jason Binn, Observer alum George Gurley and Spencer Morgan, Gay Talese, Paul Sevigny, T magazine editor Deborah Needleman, Off Duty/WSJ editorial director Ruth Altchek and Steve’s wife, Maddy Simpson. The party comes on the heels of a bash at Garbarino’s “third home,” the Chateau Marmont, on Nov. 18 attended by Tommy Chong, among many others.