This is a really fun experience. It is fairly easy to take the subway to the area and then you have about a 10 or 15 minute walk to the Smorgasburg. Bring cash as I don't believe anyone takes credit cards. There is a huge assortment of foods to try so pace yourself. Before you decide what to eat, take the time to walk around and see all the vendors because everything is great!
I do not suggest this for anyone with young kids as it is not a very family friendly experience. I think it would be difficult to manage a stroller through the crowds and there are not many areas to sit down except on the grass.
Great views of NYC skyline from here too.
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