Nothing much has changed at Johnny’s Hideaway, the cougar bar buried in the strip mall homogeneity of Roswell Road. Not the disco ball or the parquet floor or the glamour shots of dead and dying celebrities. Divorcées in tight jeans and halter tops still troll the perimeter. The oldies soundtrack is the same, though founder Johnny Esposito, “Mr. Nightlife,” passed away in April at age seventy-nine. Chris Dauria, the son of Esposito’s partner Mike Dana, has run the place for years—still guarding the door with his entourage of big, bald bouncers, as if something valuable were inside. And maybe, in this age of disposable bars, there is.