Disability access in Jiuzhaigou scenic area

Hi, I plan to take a trip to JZG and Huanglong, I wonder if the park has disability access such as wheelchair, if so, is there any rental wheelchair or the park can provide for us? If they don't, is there any warm shelter for elderly if we want to leave them for a shorthike, such a coffeshop or something with the restroom. Thank you for any reply