I know this is Knott's, not Cedar Point, but since I was just there this past summer (and it seems like the way they're handling things is trending to how Knott's is/will/may do things), I can add:
Certain rides at CP (SV, TT2, and Siren's Curse) not only required lockers, but metal detectors. They also did not allow anything in pockets, even if the pockets had a zipper or other closure. I was nearly sent back to the lockers for a single chapstick in a zippered pocket. They did allow glasses with straps.
Other CP rides (MF, Raptor) required lockers only for items that didn't fit in pockets.
And then oddly, Maverick--one of the wilder, more aggressive rides they have--had no locker requirement at all, and totally allowed people to bring up stuff and put it on the side.
So while the majority of rides required lockers, specific policies varied from ride to ride. We didn't ride Rougaru, Valravn, or Gatekeeper, so not sure what their polices were, but I think it was required lockers for the latter two. It was a bit of a mess to not know what to expect.
So... good times likely ahead for Knott's as they navigate this.