TO DO TODAY

Opera in the Park — 6:30 p.m., Old Saybrook Town Green, 300 Main St.; Salt Marsh Opera; free; saltmarshopera.org. Remember When Rock Was

Young — 7 p.m., Mohegan Sun Wolf Den; free.

“Hamlet” — 8 p.m., Wilcox Park, Broad and High streets, Westerly; Colonial Theatre’s annual Shakespeare in the Park production; free, $10 suggested donation; (401) 596-7909. “Taming of the Shrew” — 7 p.m., Connecticut College Arboretum, Williams Street, New London; Flock Theatre production; $15 adults, $12 students, seniors, active military; (860) 443-3119.

“Sardines In Striped Dresses” —2 p.m., Donald L. Oat Theater, 62 Broadway, Norwich; a comedy performed by Stage Door Theater Company, written and directed by Eugene J. Celico; $18, $16 military, seniors, students, $15 Norwich Arts Council members; (860) 887-2789.

“One Slight Hitch” — 2 p.m. Groton Senior Center, Route 117; Groton Regional Theatre production; $15, $12 for seniors; (860) 629-8478. “William Gillette: The Senator’s

Son” — 1 and 2:30 p.m., Gillette Castle State Park, 67 River Road, East Haddam; comedy drama staged by East Haddam Stage Company; written and directed by Kandie Carle; free; (860) 873-3521.

“Chicago” — 2 p.m., Ivoryton Playhouse, 103 Main St., Ivoryton; $50, $45 seniors; $22 students, $17 children; (860) 767-7318.

“Bye Bye Birdie” — 2 and 6:30 p.m., Goodspeed Opera House, 6 Main St., East Haddam; tickets start at $29; (860) 873-8668.

“Social Security” — 2 p.m., Granite Theatre, 1 Granite St., Westerly; $20, $17 seniors, $12 children; (401) 596-2341.

Open Air Market — 10 a.m.-4 p.m., Waterfront Park, New London; art and crafts, vintage and flea markets, specialty food, vendor and retail boutiques, food trucks and music.

Denison Farm Market — noon-3 p.m., Denison Homestead, 120 Pequotsepos Road, Mystic; (860) 514-6283.

Author Talk — 2 p.m., Coogan Farm, 162 Greenmanville Ave., Mystic; authors Kent Fuller and Lisa Saunders talk about their new pictorial history book, “Images of Modern America: Mystic”; free.

Sunday Evening Lecture — 5 p.m., La Grua Center, 32 Water St., Stonington; Merrill House Fellow Lorrie Moore; free; (860) 535-2300.

Kids Art Workshop — 10 a.m.noon, La Grua Center, 32 Water St., Stonington; kids sit with an artist and paint, draw, mold with clay, build crowns, more; $5; (860) 535-2300.