A couple blocks down the street from the Tea Building in Hoboken (where Eli lives) is a nice high school football field they can use and there's another one right around the corner on the Hudson River. I pass both each morning and afternoon as I take the light rail from Weehawken to my office in Jersey City and back home again each day.
Closest to the Tea Building in Hoboken:
On the Hudson River right around the corner:
They have used the Hoboken HS field in the past I believe.
“Never argue with an idiot. They will only bring you down to their level and beat you with experience.” MB Rule # 1