It sounds crazy doesn't it? And that's because it is!
Every rider is given a wristband. The second time me and my kids went on it, we thought we'd avoid the faff by emptying our persons of everything, going on with nothing but our shoes, t shirts, shorts and pants. Yet still every person in the group had to have a locker wristband, including my 8 year old daughter. This is despite the fact we had nothing to out in them and if we did, we could easily have shared one.
It makes sense when you're there as it's integral to the whole setup of the ride. As it was walk on at the end of the day, we just took a wristband each, walked past the locker scrum and straight to the metal detectors. When getting off, we again avoided the locker retrieval process, went straight to the turnstiles to give in our unused wristbands to get out, rinsed and repeated.
That's 4 staff needed just for the wristband handout, retrieval and metal detector process excluding the 1 extra that's probably needed for break cover. That's enough staff to cover an entire coaster operation off peak in many other parks.
Very strange. But I can't say I don't absolutely love the place.