This weekend’s like a kid in school. All class.BUYErin Gallagher Moving SaleWhat: The gem-loving designer slashes prices on select jewels by 40 to 75 percent before shifting her shop to Lincoln Park.Why: Stone-cold bargains.When: Fri., 11 a.m.-7 p.m.; Sat., 10 a.m.-5 p.m.; Sun., noon-5 p.m.Where: 1017 W. Lake St., b/t Carpenter & Morgan Sts. (312-492-7548).WELCOMENoMI ChefsWhat: Newly minted chef de cuisine Ryan LaRoche (former Tru sous chef) and pastry chef Frederic Moreau (World Pastry Competition bronze medalist) ably fill the resto’s toques.Why: They bring the heat.When: Sun.-Wed., 11:30 a.m.-1:30 p.m. & 6-9 p.m.; Thurs. & Fri., 11:30 a.m.-1:30 p.m. & 5:30-10 p.m.; Sat., 5:30-10 p.m.Where: Park Hyatt Chicago, 800 N. Michigan Ave., at Pearson St. (312-239-4030).CHILLThe Cedar Hotel What: Casual American bar/restaurant fills the former Cactus and Melvin B’s space, serving pulled pork sliders, salmon burgers, and more.Why: Check out the hottest patio in town.When: Sun.-Fri., 11 a.m.-2 a.m.; Sat., 11 a.m.-3 a.m. (Patio open daily 11 a.m.-11 p.m.)Where: 1112 N. State St., at Rush St. (312-944-1112).OINKThe Smoke Daddy’s Pig-in-a-BoxWhat: To-go party pack comes with baby back and spare ribs, rib tips, a pound of pork, buns, and a choice of sides.Why: Go hog wild.When: Available with one day’s notice. Restaurant hours, Sun.-Wed., 11:30 a.m.-11 p.m.; Thurs.-Sat., 11:30 a.m.-1 a.m. Where: 1804 W. Division St., at Wood St. (773-772-6656).RESERVECommon Threads World CookoutWhat: Get your ticket to the first annual food-filled event benefiting the nonprofit dedicated to children’s culinary education.Why: Top Chef’s Stephanie Izard, Urban Belly’s Bill Kim, Sunda’s Rodelio Aglibot, and others dish out specialties.When: Sept. 17. Thurs., 6:30-9:30 p.m. Buy tickets now.Where: Fulton’s on the River, 315 N. LaSalle St., b/t Wacker Dr. & Kinzie St. (312-822-0100 or fultonsontheriver.com). Tickets online at commonthreads.org.