The new fireworks show, Disneyland Forever, is intended to be watched from the F! viewing area. There are projections on the mist screens, similar to the ones on Main Street. We did the River Belle Terrace dinner and watched F! and the fireworks from the preferred viewing area and it was a great view - the fireworks were pretty much centered over the mist screen. Had friends who watched from the PotC bridge, and the fireworks were right of the mist screen, though it was still a good unobstructed view. The best view non-reserved view is probably blue, right behind the control tower, or as close to that area as you can get.