Just take what is on the list. No more, no less. Stuff everything in your day pack. If you have boots, tie them to the outside of you day pack. Wear your low-quarters. If it rains, put your stuff in zip-locks. All your street clothes will be wet and pack away until Beast is over and you can throw that away because it will be full of mildew. I would just wear a T-shirt shorts, low-quarters, even if its raining. Your cell phone and charger should be turned off and stored in a zip-lock. You will not need anything else. On A-Day you family can bring a big box fan and your iPad then.
You can show up in your underwear and they will outfit you with everything you need.
Push Hard, Press Forward