Ok, not a techie. I have an iPad (2018) connected via Ethernet cable, I am planning to get an Apple TV (also connected via Ethernet). Will I be able to connect thru AirPlay to ATV, and cast to my TV, thru my IPad (and modem/network)??? Not keen on Wifi anymore so want to mostly use Ethernet. thanks!
Yes, that works without problems. I have used such a setup myself.
Note both devices should be connected to the same local network. It doesn’t work remote over the Internet without special VPN.