This is to reply about the Land line works issue. Yes that was true in the past when all the copper lines ran from your home to the Central Office switches where batteries in the building kept the dial tone, etc functioning
However in areas with new development, like here in Florida, the telephone company now runs fiber to a concentrator in the area and then (mostly) copper to the customer. The concentrator (SLIC I think ) uses utility and has enough battery for about a day.
Here, when a hurricane hits, we lose power for typically 3 days minimum. My experience is that after a day it doesn’t matter whether you have “land line” or VOIP. your phone doesn’t work
My experience is that cell service (portable towers) comes back before the electricity to the community is restored. The VOIP providers are no faster because they rely. on community power
The cell phone (with hot spot capability) is your best option.
And here in FL, get a whole house generator