Deer park is good for picnic?

I was wondering if sunday noon to evening would be a good idea for a small picnic for a couple at deer park? I have half a day free this sunday. And have work near green park in the evening. Is it a good enough place to just sit and talk? Would it be too hot? Are there any good alternatives to sit and talk!? Preferably on the yellow line, but open to suggestions. Help a bro out, dilliwalo!