Depends on where you are
If you are up the back paddock at the house then we have power. We have a solar and generators with about 12 hours of 2kva battery @100% load, and are more than happy to share for running scope and computers. As for the front paddock, dont know dont got there.
Just bring a 25m extension lead and a power board.
We have room up at the house for about 10-15 scopes. Depends on how many are camping there.