Internet access question - Bear Island area

[Lakeprincess]

Hi folks - will be coming to the beautiful lake soon and want to purchase a "laptop stick" for my Mac, and purchase a month of mobile high speed internet time. Does anyone know if T-Mobile or Verizon works out there? And does Fairpoint (the phone provider) internet access work on the island? Could not tell by their coverage map.
Sorry to be such a dummy. Thanks!