Visiting US military bases is fun for me. The US Army, US Navy, US Air Force and US Marine Corps use 75 facilities within Japan and Okinawa, 51 of which are dedicated and the rest 24 shared with Japan Self Defense Force. Though those facilities are usually closed to civilians, they are open to residents around them once or twice a year, and you can get inside the military places during these festivals.
Visiting those facilities is one of the few occasions to get in touch with the United States. You can eat American-made hamburgers, hot dogs, steaks, turkey legs, and other American foods. You can pay foods, sodas, beer, sweets, and souvenirs with US dollars. You can talk to Americans in English. And, you can find out how average Americans live their daily life. What kind of groceries do they buy? What kind of foods do they eat? What kind of newspapers do they read? What kind of school do they make their children attend? You can catch a glimpse of those things without flying more than 12 hours to get to mainland America.
I have visited US bases and facilities in Japan and Okinawa for more than 15 years. With respect to what I have experienced, I’m grading each of these out of 5 by categories of accessibility, smoothness of entry and exit, freedom of movement, and availability of on-base building. 5 is the most excellent, and 0 the worst.