Here is a link to a thread about the launch of Discovery back in July. There are some great places listed to watch from the parks, there are some awesome pics as well from the launch. On the last page you will find my pictures from the NASA causeway of the Atlantis Launch. We LOVE going out to watch them... Jetty Park (right next to the entrance of the Ron Jon Resort) is a great place, as well as Spaceview Park in Titusville.
We have watched the last 2 from Kennedy Space Center property and could not have been more excited, delighted, mesmorized...you name it, we went through ever emotion... I highly recommend seeing a launch in person to anyone that even "thinks" about going. You have to have patience and know that a scrub is probably, as they never seem to get off on the first try, but if you get to see it go, you will NOT be disappointed. Have fun, we will be there with you.
http://www.disboards.com/showthread.php?t=1144755