If you are planning to watch the Delta IV GPS IIF-3 launch on Thursday morning then you will probably find that there will not be too many people joining you and you will be able to get your pick of viewpoints.
There are 2 great locations, SR-401 by the Cape Canaveral Air Force Station gates and Jetty Park. Moving further afield just about anywhere on Cocoa Beach will get a good view, but not until the rocket has left the pad.
As the launch is early morning Jetty Park should be open but check first. The best option is beside the SR-401 behind the cruise terminal. This is about 8 miles from Launch Pad 37B and has a full unobstructed view of the rocket over the waters of the Banana River.
There are no facilities at all here, but plenty of parking so come prepared. I have spent many a day sitting around getting a tan waiting for a launch from here. However as the launch is scheduled for 8:10am with a 19 minute window it will be all over long before 9am.
Click here for a detailed Google map.