Just give them cheap cellular-equipped laptops instead. Take advantage of the networks that are already in place - no wifi necessary.
I agree with the suggestion that using the cellular network is the way to go, I just think that turning that cellular data into WiFi will allow more devices to connect, and more freedom in how people choose to use their connection. So I would suggest portable cellular-to-WiFi routers rather than building the cellular connection into a laptop.
One phone can serve multiple nearby devices.
https://www-cs-faculty.stanford.edu/~knuth/email.html
> or 'Internet' or 'internet'?
(Other than for consistency: a publisher should have a style guide entry on it, but it doesn't bother me what they choose.)
But over time, you end up with something like "Open Source Big Data products delivered over the Internet" which gets pretty silly or you have hyphens all over the place which look pretty ugly. Where I work, our style is to generally eliminate both whenever possible.
I guess WiFi is properly Wi-Fi but hardly anyone uses that these days.