The Blended star is spending part of the summer on the popular island off the coast of Massachusetts, and, according to the locals, Barrymore, 39, and her family are having a great time.
On Friday afternoon, Barrymore and 22-month-old daughter Olive hit up the popular Children's Beach for some fun in the sun. Olive was spotted sharing beach toys with the other kids in the sand.
The family then headed to dinner at Lola Burger, where Barrymore dined on a New England summer staple: a lobster roll.
Barrymore is also mom to newborn daughter Frankie, whom she and husband Will Kopelman welcomed April 22.
Earlier in the week, Barrymore and company hung out by the pool at the Cliffside Beach Club.
"She was very friendly and very nice," realtor Lori Markell tells PEOPLE. "She said she just had her baby 11 weeks ago."
After their time at the pool, Barrymore decamped for a healthy bite at Something Natural. She was also spotted at the Starlight Café, where she posed for pictures with waitresses. Dressed in a white skirt, cardigan and no makeup, Drew looked like the epitome of New England summer casual.
"She's just a nice person," adds an onlooker who lives on the island.