Port Canaveral is one of the best viewing venues for rocket launches on the Space Coast because of its diversity. You can watch from one of the waterside restaurants with a drink in your hand, from the seven story high Exploration Tower on the observation deck, or roadside off of Route 401.
Route 401 is the best location within the Port to view a rocket launch. Viewers usually just park their cars on the side of the road typically a few hours before launch. If this is your view of choice, make sure you get there early! There is limited space and it tends to get crowded very quick.