Every year at the local theme park in Kennywood, Pittsburgh, there would be a Carpathian-Russian festival to celebrate heritage and go to the theme park. My grandfather often took his family because of the celebration involved and because of the community they were a part of, which was largely Slovakian.
My grandfather cannot remember if it was the park that started these festivals or if it was his community that decided to have the festival. They would be held at the picnic tables at the park, and there would be polka music always played by a live band and traditional polka dancing. The food that was often cooked was kielbasa, perogies, which are similar to ravioli, but have potatoes and cheese inside of them and foods more traditional to the Slovakian population. My grandfather also mentioned that they had poliopkis, similar to pigs in a blanket.
Other groups that would have similar picnics at Kennywood were the Italians and the Polish. The Irish did not as much, as they had a separate festival during the fall that they gathered and celebrated their Irish culture, although it became more commercial and was held at an amphitheater just outside the city. Kennywood festivals were special in that many people usually didn’t even ride the rides, they just paid the general admission fee to get in, (you could purchase single tickets to ride the park rides), and eat the good and participate in the celebrating.