My family has a 20 hour layover on our way home from the Carribean and we'd like to see the Panama Canal. Our flight arrives at 2:00 pm, and we depart at 11:30am the next day. We're undecided if it is best to hire a tour operator to take us from the airport to the canal/visitor center or if we would be better served renting a car and going there on our own, and then going to Casco Viejo for dinner? It seems the canal is only about a half hour drive from the Panama City Tocumen airport? Any advice for seeing the canal and what a good agenda would be for our short time in Panama City would be appreciated!