One caution -- even if you score a coveted window seat, don't be surprised if a dozen people don't cram themselves all around your table and between you and the next table when the fireworks start.
I didn't have that seat, but I would have been seriously annoyed if I did. Yes, most were children, but I saw people having to hold onto their glasses because kids were jostling the table trying to get a better look.
I suspect that from the center of the room I enjoyed the fireworks show more than the people right at the window for that very reason.