I have a private campground i get away to. I need internet because i am on call from work at all times. I use my cell phone as a hot spot with at&t. If you cannot get cell service you will have to go satellite or dsl or whatever is available. If you go satellite (ie. Hughsnet or Exede) you will have to sign a contract but you can suspend it 6 months out of the year.
For TV i use directv. I put a dish in and take a spare receiver from my house with me and hook it up. It is quite simple and align the dish myself. For the TV, I use a portable GAEMs tv. It is very handy as the case is used also for holding the directv receiver. https://gaemspge.com/black-edition-vanguard.html
That is awesome. Bringing a spare dish from home. I know that would not be acceptable to the “powers that be” here though. Still I hope your solution helps some of the others with this issue.
What might be promising is working somehow with whatever cell tower has been moved up there. I can’t guarantee that all cell phones will work or that the elderly guest will understand how to DO their own hot spots. But if we could create a hot spot somehow...