Many of these adult sleep-away camps evoke traditional summer camp themes: You sleep in a cabin, have campfires and s’mores, eat in a mess hall, do classic camp activities such as tie-dye and arts-and-crafts. Some are like wellness retreats in the wilderness, with a full range of offerings such as power yoga and psychic readings. Other camps cater to more specific themes and hobbies, from wine harvest camp to Zombie Survival Camp.