A tent would be the big issue. Even one just big enough to sleep in and keep your clothes in is all you need. The rest of the time we all are out and about under a shade or something, well... except for Raz. I think he may be staying in practice for making babies, but this is unconfirmed and I really have no desire to go see. JDL
If there are any items you wish here but do not want to drag them onto the plane, look into shipping them here beforehand. You can ship them back home when finished with Gathering, or, you can leave the stuff here for the next Gathering. Your call.
I think just an inflatable mattress would be fine to sleep on, a couple sheets, blanket, and pillow unless you find a man here to sleep on. And no. I have no desire to check on that issue either. LOL