The Tisbury Street Fair takes place this Saturday, July 8, from 6:30 to 9:30 p.m. Organizer Robin Sylvia said that kid-patrol is part of her growing list of tasks for the popular event the celebrates the town’s founding in 1671.

“It’s a lot of work and it’s a long road,” Ms. Sylvia said. “I walk up and down it four or five times.”

Ms. Sylvia owns Mardell’s Gift and Jewelry store on Main street. She said planning for the celebration begins in March, and she puts the event together on weekends.

Cars will be asked to clear Main street by 4:30 p.m. and the road will be closed at 5 p.m. Parking is available at the regional high school, where buses will shuttle people to the fair.

This year the event benefits the Tisbury Firefighters Association.

Making its debut this summer is clothing company TownPool, a Nantucket company that moved into the old Bunch of Grapes Bookstore location. Menemsha Blues, Vineyard Caribbean Cuisine and Vineyard Vines are also newcomers, and Pan-Asian restaurant Mikado is set to open its doors for the first time on Saturday.

But some traditions hold fast. Tisbury selectman Larry J. Gomez said the fair’s consistency is the best part about it.

“I remember coming to it when I first started visiting the Island in 1980,” he said. “It’s a nice thing to have for the town.”

Mr. Gomez follows his nose to his favorite booth. “I certainly like the sausage sandwiches, but the kids have the best time.”

For the young ones, there will be popcorn, cotton candy, a climbing wall and the result of Ms. Sylvia’s talent search: a magician. “I found Jonas Cain on the internet,” she said. “He’s come the past few years. He’s very good.”

Johnny Hoy and the Bluefish will help provide the backbeat for the town holiday.

“It’s our Fourth of July,” Ms. Sylvia said.