>I noticed when I choose WAP3 on Meraki the 802.11r gets disabled and 802.11w changes to Required (reject unsupported clients). Also, it's not possible to change these options.
That's because these features are mandatory in WPA3.
My personal experience - I can' get WPA3 running reliably - like being able to stay connected for a whole working day. It keeps breaking.
I would not personally roll out WPA3 to a client at this point in time. So much stuff doesn't work with it enabled.