Do I have to use the same WiFi Network Name and Password that I currently use for my new WiFi Your Way network?

We suggest you do reuse it so the transition to your new service is seamless, but you can absolutely create a completely new network name and password. You will just need to reconnect the WiFi devices in your home (Nest Thermostat, Smart TVs, smart speakers, etc) to the new WiFi network in the device’s WiFi settings.