I have Google Fiber with Google mesh router and access points.
One disturbing feature I recently discovered is that when the WAN goes down with the new router, so does my LAN. Makes no sense to me and in my 25+ years of broadband internet and 35 years of Network Admin duties, I've never experienced this. Needless to say, no LAN...no access to my file server. At those times it's great to have my Vinyl and CD collections.
I'll be contacting Google to see if there's an option to allow LAN to stay up when internet is not present.