My dad is 82 of age. He can walk on his own without aids. Ok for him to visit Jiuzhaigou in March?

You'd better let him to see his doctor and have a through check. Follow the doctor's advice to prepare this trip.

Hello Peter thanks for the info, I'm from Indonesia plan to take a trip with an elderly about 80's can you tell more about the risk and the experience about elderly traveller in JZG. Is the park is not suitable with elderly or people with disability such as wheelchair. Thanks