Uttarakhand's activities span river valleys and snow slopes, often within the same week-long trip, so packing needs to flex across both.
For river activities in Rishikesh: quick-dry clothing, a spare change of clothes, and a waterproof pouch for your phone. For higher-altitude stops like Auli or Mussoorie: a proper insulated jacket, gloves, and sunscreen, since UV exposure is stronger at altitude even on cold days.
Across every activity, carry a valid photo ID — most operators ask for it before any adventure activity — and comfortable, closed-toe shoes rather than sandals.