Get ready to have some fun! I've been up to Yokota several times from Okinawa and always have fun. The base is very nice, new BX/Commissary, nice O'Club, great food off-base. The train system in Japan is great. There is a train station about a 10 minute walk from the back gate (near billeting). You can take it anywhere. Tokyo is a blast! Mt. Fuji, skiing in Misawa, plenty of available trips all over the Pacific through ITT Travel, mt. biking, hiking, lots to do. If you've got kids you can take the train to Tokyo Disney, or go by yourself for the "kid" in you. You'll probably be getting to Japan this summer which means "Typhoons"! You guys sometimes evac down here to Okinawa, which means mucho partying and per diem! Not really sure on the stuff you really want to know, housing , vehicle, stuff like that.
Congrats and hope you enjoy Japan!