The good news is that if you plug it all in, the Wifi will activate and work right away and you will be able to connect wifi devices to the router .
The bad news is that you will not be able to get an internet connection over that wifi network until the line has been activated.
Heres what i would do in your situation , and assuming there is no internet connection to the property:
Plug the Now router in and set it up, you will not be able to use it to access the internet but you can use it to connect your devices up to the router ( wifi SSID name/password)
When it goes live the router should connect and from that point you should have full internet access
The wait time is usually down to the fact that to connect a property there is some physical work involved
