Hello
I have a question about the Vigoe2830n v2
I want DHCP turned off for the wired LAN as we have a DHCP Server in place, but could I have DHCP on for the guest devices that connected to the WIFI.

I am not sure if you can just turn off the dhcp at vigor with out interutring the wifi but
Perhaps if you give different DHCP range at the draytek (lan>general setup>details page) should not have problem the dhcp server, that means the AP or wifi keeps the dhcp of the vigor
example
set 192.168.151 or 192.168.1.201 at the vigor will use automatic from 151/201 upwards to 254 then at the server give up to 192...150 ... like this will be no conflict between them