Check out a cable modem kit from the Meadow Trading Post for free (has a diagram how-to and all cables). It cables into the cable tv jack at your site. You can plug a laptop to it.
Or instead into the cable modem plug in a wireless router or access point brought from home. And sign or log in to it from your phone/tablet/device. Then you are good to go.
I use a smart phone that has 4G/LTE and a data plan that allows tethering and hot spots. So at the Fort I hot spot my tablet to the phone so I can post a trip report and pix with a full size keyboard.
WIFI is available at Trails End (the porch rocking chairs are great), the Meadow Trading Post (back porch by the water best signal), and at the check-in Outpost building.
Bama Ed