Theodore Roosevelt Park closes at sunset, so when the gestapo agents come to boot you out, you know it's time to leave.
As for eats, I like the Chinese Restaurant "Happy Garden" on South Street, half a block North of Main St.
For Pizza, I get my slice at Nino's Pizza, 25 E Main St, Oyster Bay, NY.
You know the LBS in Oyster Bay: Visentin Bike Pro Shop, 51 Pine Hollow Road.
Yes, the Delicatessens close early in Oyster Bay.
Thanks for shopping locally!