Security: keep your wallet and car keys on you at all times, in an IC belt pouch.
My friend who introduced me to Empire also gave me this advice: ‘take nothing that you aren’t willing to lose.’ I keep that in mind with any LARP or camping. However, as the others have said, Empire is generally safe, I feel safer there than I do in the outside ‘real’ world.
Tent dressing: depends on your nation. When I was Freeborn (ie Brass Coast), I used sari fabrics draped over the sleeping pod (because getting creepy crawlies on me freaks me out) to disguise it. I used coir mat for my flooring, topped with colourful rugs. I covered the cooler with a bright blanket. I had a low, modern camp table covered in jaipur tie-dye fabric, topped with tea lights, incense, and my apothecary stuff. I had baskets with colourful fabrics to hide the mallets and such, and stools to sit on to take off my wellies (you are bringing wellies, yes? good).
Even though I had a sleeping pod, I did cover my camp bed with colourful fabrics too, in case someone looked in whilst I had it open.
I’ve moved nations, and was going to launch a new character at the now cancelled E1, so I’m still trying to figure out how I’ll decorate my tent to make it more with my new nation. I am changing the colour scheme to something less sparkly and bright, so more wool, more (real) fur, but also a change in baskets and so on.