Another source of WiFi is Internet-on-the-go
www.internet-go.com/ through Walmart, not cheap but you buy 4 gigs at a time for $45.00 but it never expires. We use one provider at our sticks and bricks and use this when we find the Wi-fi at the park we are in isn't working well. We like the lack of a monthly fee and the fact that it doesn't expire.