Camper/Hiker/Hunter are all acceptable in our society. Saying you are preparing for anything immediately makes you a nut. I love the Wholesale Warehouses like Sam's Club because nobody looks at you funny for buying in bulk because they assume it is for your business.

My strategy is don't tell anyone in the real world as your door will the one they come knocking on. The only people that know I'm into preparing are on the internet.