Can you get married here for free?

There is a fee. Marriages must be scheduled through the Central Park Conservancy. http://www.centralparknyc.org/visit/weddings.html

I think you can take pictures all around the park for free with the exception of the long . That's off limits . But you can visit nyc.gov/CityParks to get more information

Yes you can get married, but nothing is free in this town. I believe there is a $400 fee