We’re looking for an antidote to the chilly air that is supposed to blow through South Florida early in the weekend. How about some time around the fire at the Smoke & Sunshine barbecue festival? Or inside a theater during the Sun & Stars film festival? Maybe an evening enveloped in warm nostalgia: Space of Mind is throwing an ’80s party, Yacht Rock Revue is in town, as are Kansas and Al Stewart, and the Broward Center has a musical set to the songs of Neil Diamond.