IF you can find a place to tie on and have a garden hose you might get
water. Bring a splitter and a sprayer if you are going to try this.
They do have Ice you can buy. Their are plenty of food vendors if you
just want to buy food.

I'll have a cooler of Gaelic Ale and a bottle of Highland Park.

Be sure to bring a coozy for you beer and bag to keep your whisky in.
While I have not seen them enforce it much I would not
take any chances. Grandfather Mt. is in a DRY county.

Here are some other things to bring:
Sunscreen
Rain Coat or Jacket
Flashlight for night activities
Tarp for shade or for rain.
The Camping area is sometimes called tarp city since
all the experienced campers put tarps everywhere.
under their tents, over their tents, over their eating area, etc.
Be sure to look close to the lay of the land, especially the
way water may have flowed. I will have a small shovel so you can trench
around you tent if you want.
Thunderstorms are a part of life on the Mt. As are changing temps.
I have seen it in the 80's to 50's during the day and down
into the 40's at night. Be prepared for Change!