How will people know my guest wifi is available?

When someone is within range of the Mini, Cube, or Edge Extender they will see it as an open network connection. To maximize awareness, it is also encouraged to get the word out in your local area. You can advertise free guest wifi, pass out flyers, hang door tags, and tell your local neighbors. Even if your neighbors already have a subscription from their ISP they are likely interested in paying less from you, rather than paying a higher subscription cost from their ISP. This is the new gig-economy for the internet.