We rode FJ 8 times last week, which by the way was by far the best ride I've EVER ridden on, and definitely make sure you have your camera, phone, wallet, etc secured in the locker and if not, then in your pants it has pockets with a ziper or buttons. I never saw that compartment behind the seat either. Also, if you go first thing in the morning or last two hours of the park closing, the line should never be more than 30 min long (that's the longest we waited for that ride). At the end of the day it'll usually be 10-15 min (at least that's how it was last week).