Perhaps I miss understood the Sales material
Nat Mode - DHCP/NAT -
A big advantage is that the customer can have isolation between his different employee networks
I have setup 2x SSID's using NAT mode
First device - SSID1 172.16.0.25 /24
Second device -SSID2 172.18.0.254/24
However I am still able to ping across the 2 subnets
so not sure how this helps with Isolation on the LAN?