The Scoop is ...Several rides do NOT allow bags of any kind ( other than a waist pack- and not one as large as a preschooler).That includes: backpacks, crossbody and wristlets.
The rides that prohibit bags offer a locker for length of ride.Some of the locker lines can be long and have waits( Forbidden Journey is notorious for this)
The rides that prohibits bags are : Rip Ride Rocket, Mummy, Men in Black, Dragon Challenge, Forbidden Journey, Hulk
There may be more, but those are the ones I remember off the top of my head.
I bring either a smallwaistpack, or I shove it all in cargo shorts.I am not dealing with the lockers again