We live in Southold and we love it here. Lots of people like to visit the South Fork of Long Island but we think the North Fork is better for kids. Here is why:
Splish Splash and the Long Island Aquarium. The South Fork doesn't have either, it doesn't have a water park or a theme park and it also doesn't have an aquarium.
More shallow beaches for kids like Founders Landing in Southold. The water is not that rough.
Lots of good fishing spots in the North Fork. There is a marina right next to Founders Landing and there is a fishing spot there because the North Fork has the bay.
Great ferry ride to Connecticut and the rest of New England
Harbes Family Farm in Mattituck, which is a cross between a farm stand, a petting zoo, and a year-round county fair.
The North Fork is better for kids than the South Fork because of all the fun activities!