USB tethering question

Just picked up an Opal and been playing around with it for a couple of hours. My question is does USB tethering to a phone work if I don't have a tethering plan with my cell provider?

Why not try it and see?

Then you can let us all know.

Doesn't work. When I try to turn on USB tethering on my Moto G 5G it says I need to add that feature to my plan. Oh well.