Your excitement is well founded.EATFoundry on ElmWhat: Owners Ken Kelly and David Flanagan bring an American brasserie to Davis Square, complete with white Italian marble, raw bar offerings, and Sam Putnam’s tavern menu of poutine, spaetzle, and beef carbonnade. (The basement-level, fireplace-boasting saloon opens this winter.)Why: Drink program includes Prohibition-era cocktails (Sazerac, Bee’s Knees), as well as 32 beers on tap and fifteen canned.When: Mon.-Sat., 11 a.m.-1 a.m.; Sun., 10 a.m.-1 a.m.Where: 255 Elm St. (617-628-9999).SHOPBoldfacers Vintage Pop-Up StoreWhat: Amplify your fall toggery with throwback civvies during a one-night sale of antiquarian wares (home goods, too), sourced from local purveyors like Dame, Rescue, and Lady Luxe.Why: Get the acquisition juices flowing with DJ tunes and drinks.When: Tonight, 6-10 p.m.Where: W Boston, 100 Stuart St., Theater District (617-261-8700).CELEBRATEFirst Annual Armenian Street Fair and FestivalWhat: Delve deeper into the Caucasus nation via local art exhibits, live folk music, and historical displays during a two-day fete of one of our city’s most vibrant communities. Why: Strolling grub like beef and chicken kebabs ($13), watermelon and mint popsicles ($1), and lamejun ($3) — a.k.a. Armenian pizza.When: Sat., 10 a.m.-11 p.m.; Sun., noon-7 p.m.Where: Armenian Cultural and Educational Center, 47 Nichols Ave., Watertown. Tickets ($10-$15) online at boston-kermesse.org.Fashion’s Night OutWhat: Free satellite celebration of NYC’s big night includes a denim fashion show (Hudson, Citizens of Humanity, et al) and a cheeky, drag queen-led tutorial on high-heel survival.Why: Woodward at Ames’s “English Bill” Codman and Ryan McGrale from NYC’s Flatiron Lounge race to concoct the best original medley as part of the eve’s Cocktail War. When: Fri., 6-9 p.m.Where: Saks Fifth Avenue, 800 Boylston St., Back Bay (617-262-8500). R.S.V.P. to 617-937-5383.SUPPORTLocal Roots Food and Music FestivalWhat: Commend neighbors’ environmental efforts with live tunes (Mark Santoro, Dylan Chace, DJ Marco Andre) and vittles from Redbones and Dave’s Fresh Pasta.Why: All proceeds go to sustainable ag group Groundwork Somerville.When: Sat., 5-10 p.m.Where: Somerville Community Growing Center, 22 Vinal Ave., Union Square (617-666-2969). Tickets ($20) at the door.Photo: William HorneUp to 60% off Kenneth Jay LaneGot a flair for the dramatic? Invest in cocktail rings and other baubles from the man who got his start adorning Jackie O., Elizabeth Taylor, and Audrey Hepburn. Take up to 60% off on Swirl.