ticket price detail &general information about Zhangjiajie

can we visit wulingyuan& ZJJ scenic spot & tianqi mountain in same ticket or need to buy 1 ticket just only 1 spot, i am confused??,valid for 3 days,can we climb or walk if we donot want to use cable or elevator how much time it will take to visit &what about food where to eat? what about hotels there how much price for normal &simple one.what time for entrance &exit for spot ? what is fees for student in china, discount or not? iam coming by train from nantong jiangsu. or is there any rule for foreigner ?please give me reply thank you