In addition to the standard essentials for a hike, take enough food for two more days than you expect to need. And good rain gear is a must. Carry extra tarps for cooking out of the rain. The contents of your pack should be double-wrapped in plastic. Synthetic sleeping bags are recommended due to the dampness.
Good boots are a necessity.
Water must be treated, boiled or filtered. Pack a general-purpose repair kit, including duct tape, needle and thread, extra shoelaces, etc. Six hikers without reservations are allowed to start from each end of the trail each day. The trail is open May 1-Sept. Tourism BC also can make reservations for the Lady Rose.