A visit to the new Keyspan Park in Coney Island yielded a few nuggets. They offered Nathan's hot dogs at $4.00 each. Potato knishes($2.75) were better than the Gabila's offered elsewhere. There is a kosher food stand also.
One disquieting note: Security guards at the park entrance checked visitors bags/knapsacks for food contraband and any food or drink (including bottled water on a 90 degree day)) was confiscated, returnable upon exit. Any ACLU'ers out there know about our rights here, both search and seizure?