Marc, have you ever watched the line of red lights leaving the fairgrounds after the fireworks? We have, from the comfy and airy ledges of the Millbrook trail, all the while sipping wine and laughing at the slobs inching their way down county route 7.
Yes. But there are places where you are close enough to see them adequately, but not actually at the fair grounds or on Rt. 7... or dealing with the exit traffic. I would think that as a local you'd know that!
Also, 90% of the exiting traffic is headed north, back to 299 and NP. There are other ways to get back to the cliffs.