Can you do a hot spot with some kind of land phone service or something?
It can’t rely on the person and their cell phone. It has to be house specific.
You would have to provide the Hot Spot (the physical device would sit in the home) and give them the WIFI password. That’s all. If you are able to stream live TV from your cable provider, then guests would need to have your log in information in order to view from their browser, so be careful who you give it to. Sounds like you’re too far out to get DSL or any land-line services other than phone. Satellite services can be expensive. Some rural communities have built a sort of co-op WIFI. So you might look into that possibility