Hi Scott! I've been following the developments of
Summer Nightastic! closely because it looks like so much fun. I was actually able to meet with the Imagineers on the creative team that came up with the different events for this summer, which was so much fun!
Part of the changes for the Twilight Zone Tower of Terror include an eerie glow seen at night and some other surprise changes to the ride experience (which I won't spoil for you here!). In addition, the new ride sequence created
just for Summer Nightastic is now the
only sequence used for the duration of the program - now through August 14, 2010. After that, the regular (random) ride sequences will return.
I hope that helps with your planing and that you are able to make it down to experience Summer Nightastic! first-hand!
~Suzannah