Yes, as a teenager we would sneak onto the cruise ships at the dock and have lunch, watch a recent film in the theater, and get back in time to report for the last class of the day in High School. Aircraft carrier?
Yes! Lived on a few for several years, a houseboat also... growing up on an island one needed to be friends with water. The Leidseplein, Amsterdam
The Red Light District is a different area of Amsterdam, the Leidseplein is where the Melweg and the Paradaiso are located, and the Apple Store, cafes, restaurants, etc. Nice place. Africa yes, four months in Morocco which you can read about here: Hip Guide to Morocco | Hip Travel Guide Venezuela?