That's all that goes with it. The above steps may be tricky, but you can easily get it out and control your Smart Plug and the devices you plug in.
I really like how easy the Amazon Smart Plug is and that it does not. I do not have to work with a smart hub. (Although the Amazon Echo Plus has a built-in device that does not require large adjustments.) However, the benefit of a smart hub is that you can add other things like Philips hue lights and other devices that need more than just a power outlet to work.
However, if you want to use your voice or phone to easily connect a fan, Christmas lights, coffee machine, or other simple device with the switch turned off, the Amazon Smart Plug is a very easy way to do it no matter where you are.