On the subject of lockers, it was only SteVe, TTD and MF where I had to use a locker. I did for Gatekeeper and Valravn because I wasn't sure the camera would fit in the small lockers, but if you had a compact camera, phone and wallet you'd be fine on those. Everything else had old fashioned bins.
The $1/hour (min 2 hours, but hourly after that) worked really well too actually, and didn't feel like a rip off. We never struggled to get a locker, and didn't have any issues opening them. We had a very chilled couple of days in the park, so I didn't really need them, but the $10 movable one would actually have been quite good if you were having a HUGE day in the park.
I thought it was excellent! It's my number one now, after a night and a front row ride. I'm still out on mobile, but will be going in to a bit more detail in my trip report soon.